13+17+17+34+55+79+79 294 294/7 42
1,817
when both factors in a multiplication problem are rounded up to estimate the product, the estimate is an overestimate.
Explain how you know whether an estimate of a product is an overestimate or an underestimate?
No need to estimate. The true answer is 345
Their product.
the answer is 1,027
Estimation: 80% of 10 = 8 Actual: 79% of 13 = 10.27
The LCM is their product. The GCF is 1.
13% of 79= 13% * 79= 0.13 * 79= 10.27
30
82 multiplied by 79 is 6,478.
13+17+17+34+55+79+79 294 294/7 42
136-79 with ballpark estimate and partial differences method = 57
Estimate: 40 Actual: 37.92
Their product.
8.9