Lesson 1: Estimating Products Using Rounding and Compatible Numbers — Practice Questions

1. 1. To estimate the product of $59 \times 6$, round $59$ to the nearest ten. The estimated product is ___.

2. 2. Estimate the product $408 \times 5$ by rounding $408$ to the nearest hundred. The estimated product is ___.

3. 3. Estimate the product of $3,145 \times 3$ by rounding the four-digit number to the nearest hundred. The estimated product is ___.

4. 4. To estimate the product $6 \times 885$, what is the most reasonable first step using rounding?

   • A. Calculate $6 \times 800$
   • B. Calculate $6 \times 880$
   • C. Calculate $6 \times 900$
   • D. Calculate $6 \times 1000$

5. 5. A factory produces 2,950 toys each day. Approximately how many toys does it produce in 5 days? Round the number of toys to the nearest thousand to find the estimate. ___

6. 6. To estimate the product of $29 \times 58$, a student calculates $30 \times 60 = 1800$. Is this an overestimate or an underestimate?

   • A. Overestimate
   • B. Underestimate

7. 7. A baker estimates $71 \times 43$ by rounding both factors down to the nearest ten. Which statement is true about their estimate?

   • A. The estimate is an overestimate.
   • B. The estimate is an underestimate.
   • C. The estimate is equal to the actual product.
   • D. It is impossible to tell.

8. 8. To estimate $37 \times 88$, you round both factors up to the nearest ten. What is the resulting estimated product? ___

9. 9. If you estimate a product by rounding both factors down, how does your estimate relate to the actual product?

   • A. It is an overestimate.
   • B. It is an underestimate.
   • C. It is exactly the same.
   • D. The relationship cannot be determined.

10. 10. To estimate the product of $94 \times 52$, you round both factors down to the nearest ten. What is the estimated product? ___