powerpoint presentation … · factors pairs of 70: 1 and 70 2 and 35 5 and 14 7 and 10 4,200 ÷...

1) 6 × 100 =

2) List the factors of 20

3) Is 100 a factor of 500? How do you know?

4) 7,000 is _____ times greater than 70

1) 6 × 100 =

2) List the factors of 20

3) Is 100 a factor of 500? How do you know?

4) 7,000 is _____ times greater than 70

600

1, 2, 4, 5, 10, 20

Yes because 100 × 5 = 500

100

342 × 20 =

What are the factors of 20?

Have a think

1, 2, 4, 5, 10, 20

342 × 20 =

342 × 2 × 10 =

684 × 10 = 6,840

6,840

Have a think13 × 300 =

How can we multiply by 300?

100 × 3 = 300

13 × 300 =

13 × 100 × 3 =

1,300 × 3 = 3,900

3,900

Have a think1) 3,000 × 4 =

2) 700 × 51 =

3) 12 × 600 =

12,000

35,700

7,200

51 × 100 = 5,100

5,100 × 7 =

5,100

5,000 100

35,000 70012 × 100 = 1,200

1,200 × 6 = 7,200

35,700

Your turn!

Group 2

Extension:

Your turn! Group 3

60 × = 2,400

6 × = 244

10 times greater

100 times greater

10 × 10 = 100

10 times greater

40

Have a think

500 × = 35,00070

× 60 = 360,0006,000

4,200 ÷ 70 =Have a think

10

What factors of 70 will be able to help us?

Factors pairs of 70: 1 and 702 and 35 5 and 147 and 10

4,200 ÷ ___ ÷ ___ =7

420

420 ÷ 7 = 42 ÷ 7 = 660

60

56,000 ÷ 8,000 =

Have a think

56,000 ÷ _____ ÷ _____ =1,000 8

56 ÷ 8 = 7

1) 6,400 ÷ 200 =

2) 15,000 ÷ 5,000 =

6,400 ÷ 100 ÷ 2 =

64 ÷ 2 = 32

32

15,000 ÷ 1,000 ÷ 5 =15 ÷ 5 = 3

3

7

Challenge!