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