What is 3 × (3 × 8)? What is (3 × 3) × 8?
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What is 3 × (2 × 5)? What is (3 × 2) × 5?
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What is 2 × (3 × 9)? What is (2 × 3) × 9?
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What is 2 × (1 × 9)? What is (2 × 1) × 9?
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