LO: To use long or short division (Grade C)

Long Division

Eg 442 ÷ 26

4 4 2

26

1x26=262x26=52

4x26=104

10x26=260

5x26=130

3x26=78

6x26=1567x26=1828x26=2089x26=234

4

118

7

44 – 26 =18

=17

Eg 888 ÷ 24

8 8 8

24

1x24=242x24=48

4x24=96

10x24=240

5x24=120

3x24=72

6x24=1447x24=1688x24=1929x24=216

8

316

7

88 – 72 =16

=37

http://www.youtube.com/watch?v=2X0Cjy7oEgw

CHUNKING

Example 1

What is 252 ÷ 6?What is 252 ÷ 6?

Dividend Divisor

Using repeated subtraction – taking out CHUNKS

252 ÷ 6 = ?

2526

6 × 25- 150

102

6 × 10 - 60

42

6 × 5- 30

12

Answer: 42

6 x 100 =6 x 50 = 6 x 25 =6 x 10 =6 x 5 =6 x 2 =6 x 1 =

6 × 2- 12

0

Example 2

What is 729 ÷ 9?What is 729 ÷ 9?

Dividend Divisor

Using repeated subtraction – taking out CHUNKS

729 ÷ 9 = ?

7296

9 × 50- 450

279

9 × 25 - 225

54

9 × 5- 45

9

Answer: 81

9 x 100 =9 x 50 = 9 x 25 =9 x 10 =9 x 5 =9 x 2 =9 x 1 =

9 × 1- 9

0

Try these

Grade D

1.396 ÷ 3

2.819 ÷ 9

Grade C

1.252 ÷ 3

2.651 ÷ 7

Grade B

1.2.52 ÷ 3

2.6.51 ÷ 7