1. 6-3 Estimating the
Product of a Whole
Number and a Decimal
Math Notes
Number Sense 2.1

2. Estimate 52 x 8.9
52 x 8.9

3. Estimate 52 x 8.9
STEP ONE: Estimate by rounding each number to the
greatest place that has a NONZERO digit.
52 x 8.9

4. Estimate 52 x 8.9
STEP ONE: Estimate by rounding each number to the
greatest place that has a NONZERO digit.
52 x 8.9
Remember, do not round any single digit factors.

5. Estimate 52 x 8.9
STEP ONE: Estimate by rounding each number to the
greatest place that has a NONZERO digit.
52 x 8.9
Remember, do not round any single digit factors.

6. Estimate 52 x 8.9
STEP ONE: Estimate by rounding each number to the
greatest place that has a NONZERO digit.
52 x 8.9
Remember, do not round any single digit factors.

7. Estimate 52 x 8.9
STEP ONE: Estimate by rounding each number to the
greatest place that has a NONZERO digit.
52 x 8.9
50
Remember, do not round any single digit factors.

8. Estimate 52 x 8.9
STEP ONE: Estimate by rounding each number to the
greatest place that has a NONZERO digit.
52 x 8.9
50
Remember, do not round any single digit factors.

9. Estimate 52 x 8.9
STEP ONE: Estimate by rounding each number to the
greatest place that has a NONZERO digit.
52 x 8.9
50
Remember, do not round any single digit factors.

10. Estimate 52 x 8.9
STEP ONE: Estimate by rounding each number to the
greatest place that has a NONZERO digit.
52 x 8.9
50 x 9 =
Remember, do not round any single digit factors.

11. Estimate 52 x 8.9
STEP ONE: Estimate by rounding each number to the
greatest place that has a NONZERO digit.
52 x 8.9
50 x 9 = 450
Remember, do not round any single digit factors.

12. Estimate 825 x 0.46
825 x 0.46

13. Estimate 825 x 0.46
STEP ONE: Estimate by rounding each number to the
greatest place that has a NONZERO digit.
825 x 0.46

14. Estimate 825 x 0.46
STEP ONE: Estimate by rounding each number to the
greatest place that has a NONZERO digit.
825 x 0.46
Remember, do not round any single digit factors.

15. Estimate 825 x 0.46
STEP ONE: Estimate by rounding each number to the
greatest place that has a NONZERO digit.
825 x 0.46
Remember, do not round any single digit factors.

16. Estimate 825 x 0.46
STEP ONE: Estimate by rounding each number to the
greatest place that has a NONZERO digit.
825 x 0.46
Remember, do not round any single digit factors.

17. Estimate 825 x 0.46
STEP ONE: Estimate by rounding each number to the
greatest place that has a NONZERO digit.
825 x 0.46
Remember, do not round any single digit factors.

18. Estimate 825 x 0.46
STEP ONE: Estimate by rounding each number to the
greatest place that has a NONZERO digit.
825 x 0.46
800
Remember, do not round any single digit factors.

19. Estimate 825 x 0.46
STEP ONE: Estimate by rounding each number to the
greatest place that has a NONZERO digit.
825 x 0.46
800
Remember, do not round any single digit factors.

20. Estimate 825 x 0.46
STEP ONE: Estimate by rounding each number to the
greatest place that has a NONZERO digit.
825 x 0.46
800
Remember, do not round any single digit factors.

21. Estimate 825 x 0.46
STEP ONE: Estimate by rounding each number to the
greatest place that has a NONZERO digit.
825 x 0.46
800
Remember, do not round any single digit factors.

22. Estimate 825 x 0.46
STEP ONE: Estimate by rounding each number to the
greatest place that has a NONZERO digit.
825 x 0.46
800 x 0.5 =
Remember, do not round any single digit factors.

23. Estimate 825 x 0.46
STEP ONE: Estimate by rounding each number to the
greatest place that has a NONZERO digit.
825 x 0.46
800 x 0.5 = 4000
Remember, do not round any single digit factors.

24. Estimate 825 x 0.46
STEP ONE: Estimate by rounding each number to the
greatest place that has a NONZERO digit.
825 x 0.46
800 x 0.5 = 4000
Remember, do not round any single digit factors.

25. Estimate 825 x 0.46
STEP ONE: Estimate by rounding each number to the
greatest place that has a NONZERO digit.
825 x 0.46
800 x 0.5 = 4000
Remember, do not round any single digit factors.

26. Estimate 825 x 0.46
STEP ONE: Estimate by rounding each number to the
greatest place that has a NONZERO digit.
825 x 0.46
800 x 0.5 = 4000
.
Remember, do not round any single digit factors.