
Number Sense28 lessons

Basic Comparison
Choose the best answer.
10 is 7
Lesson PreviewFill in the blanks.
The number 17 has ten and ones.
Lesson PreviewWhat words should fill in the blank?
84 81
Lesson PreviewPut these numbers in order from lowest to greatest.
72, 70, 83
Lesson PreviewWhat words should fill in the blank?
66 59
Lesson PreviewRound to the nearest ten.
95 rounds to .
Lesson PreviewIs 98 an even number or an odd number?
Lesson PreviewWhat number has 9 hundreds, 8 tens, and 0 ones?
Lesson PreviewFill in the blank with <, >, or =.
699 630.
Lesson PreviewWhat comes next? Count two at a time.
85, 87, 89, , ,
Lesson PreviewFill in the blanks to complete the pattern.
60, 59, , 57, ,
Lesson PreviewWhat number has 9 hundreds, 8 tens, and 0 ones?
Lesson PreviewWhat number has 8 thousands, 1 hundreds, 2 tens, and 8 ones?
Lesson PreviewFill in the blank
1,612 9,270
Lesson PreviewRound 8,360 to the nearest ten.
Lesson PreviewRound each number to the greatest place. Then add or subtract to estimate.
13 + 59 =
Lesson PreviewArrange the following numbers from greatest to least.
5,970, 3,504, 2,858, 7,212, 8,114 , , , ,
Lesson PreviewComplete the patterns by filling in the blanks
112,022,496; 112,023,496; ; 112,025,496;
Lesson PreviewChoose the answer that correctly fills in the blank.
436,583,279 422,403,705
Lesson PreviewFill in the blank.
98 is when rounded to the nearest ten
Lesson PreviewEvaluate the expression
984  317  0
Lesson PreviewRound off each number to the hundreds. Then perform the math function to estimate the result
998  923 =
Lesson PreviewRound off each number to the hundreds. Then perform the math function to estimate the result
5,653  4,517 =
Lesson PreviewChoose the answer that correctly fills in the blank.
1 6
Lesson PreviewIf there are 2 squares, 8 triangles, and 4 circles in a box, what is the probability of choosing a square? Do not simplify. Lesson PreviewChoose the answer that correctly fills in the blank.
436,583,279 422,403,705
Lesson PreviewIn the number 702.470, which digit is in the tenths place?
Lesson PreviewFill in the blank.
98 is when rounded to the nearest ten
Lesson Preview 
Addition27 lessons

Adding Tens and Ones
What number is 1 more than 10?
Lesson PreviewWhat is 1 + 2?
Lesson PreviewWhat is 1 + 1?
Lesson PreviewWhat is 4 + 0?
Lesson PreviewFill in the blanks with the numbers that come next. Then use the counting numbers to help you add.
4, , , . What is 4 + 3?
Lesson PreviewWhat is 1 + 1?
Lesson PreviewWhat is 5 + 5 =
Lesson PreviewCan you think of another way to write 5 + 4?
5 + 4 = +
Lesson PreviewWhat is 1 + 2?
Lesson Preview1 + 6 + 4 =
Lesson PreviewWhat is 15 + 6?
Lesson PreviewWhat is 14 + 5?
Lesson PreviewFill in the missing number in the addition problem.
5 + = 12
Lesson PreviewRewrite the addition problem as some number plus ten.
6 + 7 = 10 +
Lesson Preview4 + 1 + 1 =
Lesson PreviewWhat is 45 + 33?
Lesson PreviewWhat is 58 + 33?
Lesson PreviewWhat is 30 + 40?
Lesson PreviewRound 76 to the nearest ten.
Lesson PreviewWhat is 34 + 48 + 4?
Lesson Preview400 + 100 =
Lesson Preview686 + 151 =
Lesson PreviewRound both 21 and 37 to the nearest ten.
21 rounds to and 37 rounds to .
Then, add the rounded numbers to estimate the sum. The sum of the rounded numbers isLesson PreviewFill in the blank
35 + 94 70 + 58
Lesson PreviewWhat property of addition does 23 + 60 = 60 + 23 reflect?
Lesson Preview2,778 + 2,428 =
Lesson Preview$4.30 + $1.36 = $
Lesson Preview 
Subtraction27 lessons

Subtraction Below Five
What is 5  2?
Lesson PreviewWhat is 10  8?
Lesson PreviewIf 3 + 3 = 6, what is 6  3?
Lesson PreviewWhat is 2  0?
Lesson PreviewFill in the blanks by counting backwards. Then use the counting numbers to help you subtract.
9, , , . What is 9  3?
Lesson PreviewSolve the problem
5+ 3Lesson PreviewWhat is 21 + 3?
Lesson PreviewWhat is 8  2?
Lesson PreviewWhat is 45  6?
Lesson PreviewWhat is 67  1?
Lesson PreviewIf 5 + 10 = 15, what is 10 + 5 equal to?
Lesson PreviewWhat is the value of the tens place in the number 96 (for example, the value of the tens place in 28 is 20)? What is the value of the ones digit?
Lesson Preview900  800 =
Lesson Preview849  788 =
Lesson Preview985  694 =
Lesson Preview700
 100

Lesson PreviewWhat is 41  20?
Lesson PreviewWhat is 83  65?
Lesson PreviewRound both 92 and 52 to the nearest ten.
92 rounds to and 52 rounds to .
Then, subtract the rounded numbers to estimate the difference. The difference of the rounded numbers isLesson PreviewWhat is 75  25? Check your answer by adding 50 + 25. What is 50 + 25?
Lesson PreviewWhat is 80  40?
Lesson PreviewWhat is 16 + 50?
Lesson Preview900  800 =
Lesson Preview9,275  2,361 =
Lesson Preview$6.27  $4.27 = $
Lesson PreviewEvaluate the expression
813  477
Lesson PreviewEvaluate the expression
540  79
Lesson Preview 
Multiplication18 lessons

Basic Multiplication
What is 5 × 4?
Lesson PreviewCount by 2s to help you multiply 2 × 6.
2, 4, , , , . What is 2 × 6?
Lesson PreviewWhat is 2 + 2 + 2?
Lesson PreviewIf you have 2 boxes, and put 6 apples into each box, how many apples do you have?
Lesson PreviewWhat is 2 × 6?
Lesson Preview1 × 5 =
Lesson Preview3 × 10 =
Lesson Preview6 × 3 =
Lesson Preview0 × 2 =
Lesson PreviewWhat is 3 × (3 × 8)? What is (3 × 3) × 8?
Lesson PreviewIf 3 × 5 = 15, what is 15 ÷ 5?
Lesson Preview2 × 33 =
Lesson Preview2 × 431 =
Lesson Preview5 × 31 =
Lesson Preview4 × 4 =
Lesson Preview4,925 × 1,401 = × 4,925
Lesson PreviewEvaluate the expression
65 × 4 =
Lesson PreviewRound off each number to the tens. Then perform the math function to estimate the result
71 × 18 =
Lesson Preview 
Division14 lessons

Basic Division
2)10 The quotient is Lesson PreviewCount backwards by 4s all the way to 0 to help you divide 20 ÷ 4.
20, 16, , , , . What is 20 ÷ 4?
Lesson PreviewIf you divide 13 apples into 2 equal groups, how many apples are left over at the end?
Lesson PreviewIn the division equation 32 ÷ 4 = 8, what is the dividend?
Lesson Preview2 ÷ 2 =
Lesson Preview6 ÷ 3 =
Lesson Preview16 ÷ 8 =
Lesson Preview6 ÷ 6 =
Lesson Preview1 )6 , what is the quotient? what is the remainder? Lesson PreviewFind both the quotient and remainder
11 ÷ 1. What is the quotient? What is the remainder?
Lesson PreviewFind both the quotient and remainder
562 ÷ 3. What is the quotient? What is the remainder?
Lesson PreviewCalculate the quotient and remainder
2 ) 22 . What is the quotient? What is the remainder? Lesson Preview1)9,097
Quotient = , Remainder =Lesson Preview8)1,657
Quotient = , Remainder =Lesson Preview 
Geometry36 lessons

Identify Solid Figures
Identify the shape of the figure:
Lesson PreviewWhat is the name of the figure?
Lesson PreviewHow many sides in the figure?
Lesson PreviewHow many vertices in the figure?
Lesson PreviewWhich figure has more vertices?
Figure 1 Figure 2 Lesson PreviewWhat shape can you trace from this solid figure?
Lesson PreviewClassify the polygon.
Lesson PreviewFind the perimeter of the shaded figure.
unitsLesson PreviewFind the perimeter of the figure.
cmLesson PreviewFind the area of the shaded figure.
square unitsLesson PreviewWhat is the area of a rectangle with length 4yd and width 5yd? yd^{2}.
Lesson PreviewIdentify the type of triangle.
Lesson PreviewIdentify the type of quadrilateral.
Lesson PreviewIdentify the solid figure.
Lesson PreviewFor the given figure, find the number of faces, edges, and vertices:
Lesson PreviewIdentify the figure:
Lesson PreviewClassify the polygon.
Lesson PreviewIs this figure a line, line segment or ray?
Lesson PreviewWhich answer most accurately describes the figure shown?
Lesson PreviewClassify this angle as right, acute or obtuse:
Lesson PreviewIdentify the type of triangle.
Lesson PreviewIdentify the type of quadrilateral.
Lesson PreviewIdentify the part of the circle.
Lesson PreviewAre these shapes congruent?
Lesson PreviewClassify this angle as right, acute or obtuse:
Lesson PreviewEstimate the measure of the angle:
Lesson PreviewIf angle X = 132, then angle Y =
Lesson PreviewIdentify the type of triangle.
Lesson PreviewFind the value of x.
degreesLesson PreviewFind the value of x.
degreesLesson PreviewWhat is the area of this triangle?
cm^{2}Lesson PreviewWhat is the area of this trapezoid with height = 8 ft?
ft^{2}Lesson PreviewWhat is the volume of this cube with width = 6m?
m^{3}Lesson PreviewWhat is the surface area of this cube with width = 4yd?
yd^{2}Lesson PreviewWhat is the circumference of a circle with diameter = 12m, using 3.14 for ?
mLesson PreviewWhat is the area of a circle with radius = 7m, using 3.14 for ?
mLesson Preview

Time18 lessons

Telling time I  hours
What time does the clock show?Lesson PreviewWhat time does the clock show?Lesson PreviewJude started working at the time shown on the first clock and finished at the time shown on the second clock. How long did Jude work for?
Start time:Finish time:Lesson PreviewToday is Tuesday. What day is tomorrow?
Lesson PreviewUse the calendar to answer the question.
What day of the week is August 18th?
Lesson PreviewWhat date is just after Sunday, October 17th?
Lesson PreviewUse the table.
What time does Toy Story start at?
Movie Schedule Movie Start time Toy Story 10:00 Ratatouille 12:00 Beauty and the Beast 2:00 Hook 4:00 Tangled 6:00 Lesson PreviewJoel started working at the time shown on the first clock and finished at the time shown on the second clock. How long did Joel work for?
Start time:Finish time:Lesson PreviewWhat is the 10th month of the year?
Lesson PreviewWhich is the longer amount of time?
Lesson PreviewUse the table.
Ratatouille starts 2 hours after Beauty and the Beast. What time does Ratatouille start at?
Movie Schedule Movie Start time Beauty and the Beast 9:00 Hook 11:00 Finding Nemo 1:00 Tangled 3:00 The Little Mermaid 5:00 Lesson PreviewVictor started walking at 3:15 and finishes at 5:45. How long did Victor walk for? hours and minutes
Lesson PreviewAnswer the question by creating as many whole hours as you can and then finding how many minutes remain.
How many hours and minutes are in 193 minutes? hours and minutes
Lesson PreviewJimmy started reading at 7:15 and finishes at 8:40. How long did Jimmy read for? hours and minutes
Lesson PreviewElena started walking at 7:26 and finishes at 10:19. How long did Elena walk for? hours and minutes
Lesson PreviewAnswer the question by creating as many whole hours as you can and then finding how many minutes remain.
How many hours and minutes are in 193 minutes? hours and minutes
Lesson PreviewJimmy started reading at 7:15 and finishes at 8:40. How long did Jimmy read for? hours and minutes
Lesson PreviewElena started walking at 7:26 and finishes at 10:19. How long did Elena walk for? hours and minutes
Lesson Preview 
Measurement23 lessons

Introduction to weight
Which is heavier?
swimming pool
orange
Lesson PreviewWhich unit of weight is more appropriate for weighing a horse?
Lesson PreviewWhich is the better estimate for the weight of a strawberry?
Lesson PreviewWhich unit of weight is more appropriate for weighing a wizard hat?
Lesson PreviewWhich is the better estimate for the weight of a horse?
Lesson PreviewWhich unit is better for measuring the width of a folder?
Lesson PreviewWhich is the better estimate for the length of a car?
Lesson PreviewWhich is the better estimate for the length of a truck?
Lesson PreviewWhich unit is better for measuring the height of a mountain?
Lesson PreviewWhich is the better estimate for the capacity of a juice carton?
Lesson PreviewWhich is the better estimate for the capacity of a fish tank?
Lesson PreviewWhich is the better temperature go for a run?
Lesson PreviewWhich unit of weight is more appropriate for weighing a horse?
Lesson PreviewWhich is the better estimate for the weight of a strawberry?
Lesson PreviewWhich unit of weight is more appropriate for weighing a wizard hat?
Lesson PreviewWhich is the better estimate for the weight of a horse?
Lesson PreviewWhich unit is better for measuring the width of a folder?
Lesson PreviewWhich is the better estimate for the length of a car?
Lesson PreviewWhich is the better estimate for the length of a truck?
Lesson PreviewWhich unit is better for measuring the height of a mountain?
Lesson PreviewWhich is the better estimate for the capacity of a juice carton?
Lesson PreviewWhich is the better estimate for the capacity of a fish tank?
Lesson PreviewWhich is the better temperature go for a run?
Lesson Preview 
Fractions And Decimals6 lessons

Equivalent Fractions
Choose the answer that fills in the blank.
1 2 2 4 Lesson PreviewChoose the answer that fills in the blank with <, > or =.
6 3 8 8 Lesson PreviewSolve the problem, do not simplify.
3 + 1 = 9 9 Lesson PreviewSolve the problem, do not simplify.
4  2 = 7 7 Lesson PreviewWrite 7 as a decimal. 10 Lesson PreviewWrite the value of two quarters as a fraction, with 100 as a denominator. Lesson Preview 
Other6 lessons

Squares
7 × 7 = 7 with the exponent of
Lesson Preview3 × 5 = , 3 × 50 = , 3 × 500 = , 3 × 5,000 =
Lesson PreviewHow many minutes are there in 7 hours?
Lesson PreviewHow many grams are there in 9 kilograms?
Lesson Preview39)273 = Lesson PreviewWhat is the mean of the set { 11, 10, 7, 9, 13 }?
Lesson Preview 
Algebra22 lessons

Expressions using parentheses
Evaluate the expression
(735 + 688) + 240
Lesson Preview(936 + 426) + 255 = 936 +
Lesson PreviewEvaluate the expression
6 + 5 + (9  8) × 8
Lesson PreviewEvaluate the expression
a  1 = , where a=3
Lesson Preview12 + 3 × 5 =
Lesson PreviewWrite an algebraic expression that describes the following word phrase, using the letter `a` for the unknown number.
nine times a number minus two = a 
Lesson PreviewSolve the equation.
x + 14 = 14, x =
Lesson PreviewUse the distributive property to fill in the blank.
2 × 26 = (2 × 18) + (2 × )
Lesson PreviewFill in the blank.
54 × 73 = 73 ×
Lesson PreviewFill in the blank.
48 + (2 + 50) = (48 + 2) +
Lesson PreviewFill in the blank.
3,894 + 0 =
Lesson PreviewRound to the underlined digit
4.4109 =
Lesson PreviewRound to the nearest whole number, and then estimate the sum.
5.474 + 3.957 ≈
Lesson Preview12 + 3 × 5 =
Lesson PreviewUse the distributive property to fill in the blank.
2 × 26 = (2 × 18) + (2 × )
Lesson PreviewEvaluate the expression when x = 11.
3x  14 =
Lesson PreviewIn the expression 21x + 37, what is the coefficient of x? What is the constant term?
Lesson PreviewUse the formula P = 2l + 2w to find the perimeter of a rectangle with the following dimensions:
Length 9, Width 17 =
Lesson PreviewSolve the equation.
x + 12 = 15, x =
Lesson PreviewSolve the equation.
7y = 7 × 1, y =
Lesson PreviewHow would you write the ratio of 32 to 73 in ratio form? Do not simplify the ratio.
Lesson PreviewSolve for x.
x = 19 , x = 30 15 Lesson Preview