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Chapter 2: Divide Whole Numbers.

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Presentation on theme: "Chapter 2: Divide Whole Numbers."— Presentation transcript:

1 Chapter 2: Divide Whole Numbers

2 Compatible Numbers Numbers that are easy to compute with mentally Dividend The number that is to be divided in a division problem Divisor The number that divides the dividend Estimate A number close to an exact amount Factor A number multiplied by another number to find a product Partial Quotients A method of dividing in which multiples of the divisor are subtracted by the dividend then the quotients are added together. Product The answer to a multiplication problem Quotient The number, not including the remainder, that results from dividing Remainder The amount left over when a number cannot be divided equally

3 Draw a quick picture to model 426.
Show 426 ÷ 3 =

4 Draw a quick picture to model 184.
Show 184 ÷ 4 =

5 Draw a quick picture to model 364.
Show 364 ÷ 3 =

6 Draw a quick picture to model 218.
Show 218 ÷ 4 =

7 Lesson 2.1 Place the First Digit
Date Lesson 2.1 Place the First Digit

8

9 Lesson 2-1 Notes: Traditional Division Steps Divide (÷) Multiply (x)
Subtract (-) Bring down (check) Estimate: 6 372

10 Lesson 2-1 Notes: Traditional Division Steps Divide (÷) Multiply (x)
Subtract (-) Bring down Estimate: 3 627

11 Lesson 2-1 To Do List: 1. Complete pgs 63 & 64 2. Enrich/reteach worksheet

12 Use your clicker to answer the following question:
Test Prep Lesson 2-1: Use your clicker to answer the following question:

13 Lesson 2.2 Divide 1– Digit Divisors
Date Lesson 2.2 Divide 1– Digit Divisors

14 94 3 n n = 3 * 94 dividend divisor quotient 58 6 n r 4 n = 6 * dividend divisor quotient remainder 74 8 599 r n 599 = 8 * 74 + n dividend divisor quotient remainder

15 Lesson 2-2 Notes: Traditional Division Steps Divide (÷) Multiply (x)
Subtract (-) Bring down Estimate: Check your answer (multiply)

16 Divide (÷) Multiply (x) Subtract (-) Bring down
Traditional Division Steps Divide (÷) Multiply (x) Subtract (-) Bring down Estimate: 7 297 Check your answer (multiply)

17 Lesson 2-2 To Do List Complete pages 67 & 68 2. Enrich/reteach worksheet

18 Test Prep Lesson 2-2: Use your clicker to answer the following question:

19 Lesson 2.3 Modeling Division
with Base 10 Blocks Date

20 Lesson 2-3 Notes: 12 156 10 3 + 12

21 15 180 10 2 + 15

22 13 143 10 + 1 13

23 12 168 10 4 + 12

24 14 154 14 10 + 1

25 11 187 11 10 7 +

26

27

28 Lesson 2-3 To Do List: 1. Complete pgs 71 & 72 2. Work on enrich worksheet

29 Lesson 2-4 Partial Quotients
Date

30 Lesson 2-4

31 Lesson 2-4 Notes: 17 476 17 476 Division Problem Partial Quotient
Multiplication Expression Partial Quotient Division Problem Multiplication Expression Partial Quotient 17 476 17 476

32 Lesson 2-4 Notes: 18 648 18 648 Division Problem Partial Quotient
Multiplication Expression Partial Quotient Division Problem Multiplication Expression Partial Quotient 18 648 18 648

33 Lesson 2-4 Notes: 25 753 25 753 Division Problem Partial Quotient
Multiplication Expression Partial Quotient Division Problem Multiplication Expression Partial Quotient 25 753 25 753

34 Lesson 2-4 Notes: 62 3186 62 3186 Division Problem Partial Quotient
Multiplication Expression Partial Quotient Division Problem Multiplication Expression Partial Quotient 62 3186 62 3186

35 Lesson 2-4 To Do List: Complete pgs 75 & 76 2. Work on enrich worksheet

36 Lesson 2.5 Estimate with 2-digit divisors
Date Lesson 2.5 Estimate with 2-digit divisors

37 Lesson 2-5 Notes: 1,731 ÷ 27 Step 1: 1,731 ÷ ___ Step 2: Estimate 1
round the divisor to a multiple of 10 1,731 ÷ ___ Step 2: Estimate 1 round the dividend up to a number compatible with your divisor ____ ÷ 30 = ___ Step 3: Estimate 2 round the dividend down to a number compatible with your divisor ____ ÷ 30 = ___

38 4,785 1,578 79 42 Estimate 1: Estimate 1: _____ ÷ _____ = _____
_____ ÷ _____ = _____ Estimate 1: _____ ÷ _____ = _____ Estimate 2: _____ ÷ _____ = _____ Estimate 2: _____ ÷ _____ = _____

39 413 396 59 42 Estimate 1: _____ ÷ _____ = _____ Estimate 1:
_____ ÷ _____ = _____ Estimate 1: _____ ÷ _____ = _____ Estimate 2: _____ ÷ _____ = _____ Estimate 2: _____ ÷ _____ = _____

40 Test Prep Lesson 2-5: Use your clicker to answer the following question:

41 Lesson 2.6 Divide by 2-digit divisors
Date

42 Lesson 2-6 Notes: 620 28 Estimate: _____ ÷ _____ = _____
Traditional Division Steps Divide (÷) Multiply (x) Subtract (-) Bring down Estimate: _____ ÷ _____ = _____ 620 28

43 Lesson 2-6 Notes: 842 64 Estimate: _____ ÷ _____ = _____
Traditional Division Steps Divide (÷) Multiply (x) Subtract (-) Bring down Estimate: _____ ÷ _____ = _____ 842 64

44 Lesson 2-6 To Do List: Complete pgs 85 & 86 2. Work on enrich worksheet

45 Test Prep Lesson 2-6: Use your clicker to answer the following question:

46 Date Lesson 2-7 Interpret the Remainder

47 Lesson 2-7 To Do List: Complete pgs 89 & 90 2. Work on enrich worksheet

48 Test Prep Lesson 2- 7: Use your clicker to answer the following question:

49 Lesson 2-8 Adjust Quotients
Date Lesson 2-8 Adjust Quotients

50 720 ÷ 8 = 720 ÷ 80 = 7,200 ÷ 80 = 24 ÷ 6 = 240 ÷ 6 = 240 ÷ 60 = 55 ÷ 11 = 550 ÷ 11 = 5,500 ÷ 11 = 20 ÷ 5 = 200 ÷ 5 = 200 ÷ 50 =

51

52 Notes: 24 576 2 18 857 4

53 Notes: 23 652 3 42 3783 8

54 Lesson 2-8 To Do List: Complete pgs 93 & 94 2. Work on enrich worksheet

55 Test Prep Lesson 2-8: Use your clicker to answer the following question:

56 Lesson 2.9 Problem Solving-Division
Date Lesson 2.9 Problem Solving-Division

57 Notes:

58 Lesson 2-9 To Do List: 1. Complete pgs 97 & 98 2. Work on enrich worksheet

59 Test Prep Lesson 2-9: Use your clicker to answer the following question:


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