Which of these expressions have an estimated product of 30? Check all that apply.

Estimate each product by rounding the factors to easy numbers. For A, 9.7 × 2.84 is about 10 × 3 = 30. For C, 6.25 × 4.76 is about 6 × 5 = 30 (the exact product is 29.75). B is about 10 × 30 = 300, and D is about 35 × 2 = 70, so neither is close to 30.

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