1. Grade 5 Module 1 Lesson 12

2. Sprint Add Decimals

3. Find the Product 4 × 2 ones = ___

4. Find the Product 4 × 2 ones = ___ 4 × 2 = 8 Say the multiplication sentence in unit form.

5. Find the Product 4 × 2 ones = ___ 4 × 2 = 8 Say the multiplication sentence in unit form. 4 × 2 ones = 8 ones

6. Find the Product 4 × 2 tenths = ____

7. Find the Product 4 × 2 tenths = ____ 4 × 2 tenths = 0.8 Say the multiplication sentence in unit form.

8. Find the Product 4 × 2 tenths = ____ 4 × 2 tenths = 0.8 Say the multiplication sentence in unit form. 4 × 2 tenths = 8 tenths

9. Find the Product 4 × 2 hundredths = ____

10. Find the Product 4 × 2 hundredths = ____ 4 × 2 hundredths = 0.08 Say the multiplication sentence in unit form.

11. Find the Product 4 × 2 hundredths = ____ 4 × 2 hundredths = 0.08 Say the multiplication sentence in unit form. 4 × 2 hundredths = 8 hundredths

12. Find the Product 5 × 3 ones = ____

13. Find the Product 5 × 3 ones = ____ 5 × 3 ones = 15 Say the multiplication sentence in unit form.

14. Find the Product 5 × 3 ones = ____ 5 × 3 ones = 15 Say the multiplication sentence in unit form. 5 × 3 ones = 15 ones

15. Find the Product 5 × 3 tenths = ___

16. Find the Product 5 × 3 tenths = ___ 5 × 3 tenths = 1.5 Say the multiplication sentence in unit form.

17. Find the Product 5 × 3 tenths = ___ 5 × 3 tenths = 1.5 Say the multiplication sentence in unit form. 5 × 3 tenths = 15 tenths = 1 one and 5 tenths

18. Find the Product 5 × 3 hundredths = ___

19. Find the Product 5 × 3 hundredths = ___ 5 × 3 hundredths = 0.15 Say the multiplication sentence in unit form.

20. Find the Product 5 × 3 hundredths = ___ 5 × 3 hundredths = 0.15 Say the multiplication sentence in unit form. 5 × 3 hundredths = 15 hundredths

21. Application Patty buys 7 juice boxes a month for lunch. If one juice costs $2.79, how much money does Patty spend on juice each month? Use an area model to solve.

22. Application Patty buys 7 juice boxes a month for lunch. If one juice costs $2.79, how much money does Patty spend on juice each month? Use an area model to solve. 2 ones 7 tenths 9 hundredths 7

23. Application Patty buys 7 juice boxes a month for lunch. If one juice costs $2.79, how much money does Patty spend on juice each month? Use an area model to solve. 2 7 tenths9 hundredths 7 7 x 2 ones = 14 ones

24. Application Patty buys 7 juice boxes a month for lunch. If one juice costs $2.79, how much money does Patty spend on juice each month? Use an area model to solve. 2 7 tenths9 hundredths 7 7 x 2 ones = 14 ones 7 x 7 tenths= 49 tenths

25. Application Patty buys 7 juice boxes a month for lunch. If one juice costs $2.79, how much money does Patty spend on juice each month? Use an area model to solve. 2 7 tenths9 hundredths 7 14 + 4.9 + 0.63 7 x 2 ones = 14 ones 7 x 7 tenths= 49 tenths 7 x 9 hundredths = 63 hundredths

26. Application Patty buys 7 juice boxes a month for lunch. If one juice costs $2.79, how much money does Patty spend on juice each month? Use an area model to solve. 2 7 tenths9 hundredths 7 14 + 4.9 + 0.63 = $19.53 a month 7 x 2 ones = 14 ones 7 x 7 tenths= 49 tenths 7 x 9 hundredths = 63 hundredths

27. Concept Development How are these 3 problems alike? 31 x 4 = 3.1 x 4 = 0.31 x 4 =

28. Concept Development How are these 3 problems alike? 31 x 4 = 3.1 x 4 = 0.31 x 4 = Use the area model to find the products.

29. Concept Development 4 3 tens 1 one+

30. Concept Development 12 tens4 ones 4 3 tens 1 one+

31. Concept Development 12 tens4 ones 4 3 tens 1 one+ 1204 = 124+

32. Concept Development 4 3 ones 1 tenth+

33. Concept Development 12 ones4 tenth 4 3 ones 1 tenth+

34. Concept Development 12 ones4 tenth 4 3 ones 1 tenth+ 120.4 = 12.4+

35. Concept Development 4 3 tenths 1 hundredths+

36. Concept Development 12 tenths4 hundredths 4 3 tenths 1 hundredths +

37. Concept Development 12 tenths4 hundredths 4 3 tenths 1 hundredths+ 1.20.04 = 1.24+

38. Concept Development 5.1 x 6 What is the smallest unit in 5.1?

39. Concept Development 5.1 x 6 What is the smallest unit in 5.1? Tenths Multiply 5.1 by 10 to convert it to tenths. How many tenths is the same as 5.1?

40. Concept Development 5.1 x 6 What is the smallest unit in 5.1? Tenths Multiply 5.1 by 10 to convert it to tenths. How many tenths is the same as 5.1? 51 tenths

41. Concept Development 51 tenths Suppose our multiplication sentence was 51 x 6 Multiply and record your multiplication vertically. What is the product? 51 x 6

42. Concept Development 51 tenths Suppose our multiplication sentence was 51 x 6 Multiply and record your multiplication vertically. What is the product? 51 tenths x 6 306 tenths

43. Concept Development 51 tenths x 6 306 tenths Is this a reasonable product for our actual problem of 5.1 x 6. Turn and Talk

44. Concept Development 51 tenths x 6 306 tenths Is this a reasonable product for our actual problem of 5.1 x 6. 5.1 is close to 5.  5 x 6 = 30 306 tenths = 30.6. The product is reasonable.

45. Problem Set Take 10 minutes and do your personal best to complete the Problem Set

46. Student Debrief Lesson Objective: Multiply a decimal fraction by single-digit whole number, including using estimation to confirm the placement of the decimal point.