1. Module 2 Lesson 2 Estimate multi-digit products by rounding factors to a basic fact and using place value patterns.

2. 5.NBT.1 Recognize that in a multi-digit number, a digit in one place represents 10 times as much as it represents in the place to its right and 1/10 of what it represents in the place to its left. 5.NBT.2 Explain patterns in the number of zeros of the product when multiplying a number by powers of 10, and explain patterns in the placement of the decimal point when a decimal is multiplied or divided by a power of 10. Use whole-number exponents to denote power of 10. Common Core Standards

3. Learning Targets I can Estimate multi-digit products by rounding factors to a basic fact and using place value patterns.

4. Sprint A

7. Sprint B

10. Activate Knowledge Write the multiplication sentence 31 × 10 =

11. Activate Knowledge Write the multiplication sentence 31 × 10 = 310 × 2 =

12. Activate Knowledge Write the multiplication sentence 31 × 10 = 310 × 2 = 310 × 20 =

13. Activate Knowledge Write the multiplication sentence 23 × 10 =

14. Activate Knowledge Write the multiplication sentence 23 × 10 = 230 × 4 =

15. Activate Knowledge Write the multiplication sentence 23 × 10 = 230 × 4 = 230 × 40 =

16. Activate Knowledge Write the multiplication sentence 32 × 10 =

17. Activate Knowledge Write the multiplication sentence 32 × 10 = 320 × 3 =

18. Activate Knowledge Write the multiplication sentence 32 × 10 = 320 × 3 = 320 × 30 =

19. Activate Knowledge Jonas practices guitar 1 hour a day for 2 years. Bradley practices the guitar 2 hours a day more than Jonas. How many more minutes does Bradley practice the guitar than Jonas over the course of 2 years?

20. Learn Estimate 23 x 18 Problem 1

21. Learn Estimate 23 x 18 2 x 2 x 10 x 10 20 x 20 Problem 1

22. Learn Estimate 456 × 42 Problem 2

23. Learn Estimate 456 × 42 460 x 40 Problem 2

24. Learn Estimate 456 × 42 500 x 40 Problem 2

25. Learn Estimate 456 × 42 5 x 4 x 10 x 10 x 10 500 x 40 Problem 2

26. Learn Estimate 4560 × 42 Problem 3

27. Learn Estimate 4560 × 420 Problem 4

28. Learn Estimate 1,320 x 88 Problem 5

29. Estimate 13,205 × 880 1,320 × 88 ≈ 90,000 Problem 6 ✔ Check Understanding

30. Estimate 3,120 × 880 Problem 7 ✔ Check Understanding

31. Practice

40. Review