Round the numbers in each expression to the nearest whole number. Then select all expressions that are about 8. A. 3 1 5 + 5 7 9 B. 15 5 7 − 8 2 9 C. 1 5 8 + 5 2 5 D. 10 1 4 − 1 11 15 E. 2 7 10 + 4 8 9
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To determine which of the given expressions are about 8, we need to round the numbers in each expression to the nearest whole number and check if the result is approximately 8.
A. 3 1 5 + 5 7 9
Rounding the numbers: 315 + 579
Sum: 894
Rounded sum: 894
B. 15 5 7 − 8 2 9
Rounding the numbers: 1557 - 829
Difference: 728
Rounded difference: 728
C. 1 5 8 + 5 2 5
Rounding the numbers: 158 + 525
Sum: 683
Rounded sum: 683
D. 10 1 4 − 1 11 15
Rounding the numbers: 1014 - 1115
Difference: -101
Rounded difference: -101
E. 2 7 10 + 4 8 9
Rounding the numbers: 2710 + 489
Sum: 3199
Rounded sum: 3199
Based on rounding, expressions A, B, and C are approximately 8 since their rounded values are closer to 8. The rounded value of expression D is -101, which is not about 8. The rounded value of expression E is 3199, which is significantly larger than 8.
Therefore, the expressions that are about 8 are A. 3 1 5 + 5 7 9, B. 15 5 7 − 8 2 9, and C. 1 5 8 + 5 2 5.