89
Multiplication and division:
2s, 3s, 4s and 5s up to 75
2s, 3s, 4s and 5s up to 75
Term 3
How fast can you answer the following?
| 1 × 2 = | 5 × 3 = | 4 × 2 = | 10 × 2 = |
| 4 × 3 = | 3 × 2 = | 2 × 2 = | 3 × 3 = |
| 6 × 4 = | 4 × 3 = | 5 × 3 = | 9 × 4 = |
| 6 × 5 = | 8 × 3 = | 9 × 4 = | 8 × 5 = |
| 7 × 3 = | 8 × 5 = | 2 × 5 = | 7 × 5 = |
Colour the blocks where the sum gives you a remainder.
| 12 ÷ 2 = 6 | 13 ÷ 3 = 4 rem 1 | 15 ÷ 5 = | 18 ÷ 5 = |
| 20 ÷ 4 = | 23 ÷ 4 = | 16 ÷ 3 = | 18 ÷ 3 = |
| 25 ÷ 2 = | 24 ÷ 2 = | 30 ÷ 2 = | 29 ÷ 2 = |
| 19 ÷ 3 = | 17 ÷ 3 = | 31 ÷ 5 = | 30 ÷ 5 = |
| 55 ÷ 5 = | 52 ÷ 5 = | 57 ÷ 3 = | 60 ÷ 3 = |
How do you know that a number can be divided by:
- 3? If you add the digits of a number (e.g. 72 has the digits 7 + 2 = 9) and you can divide that new number by 3 (e.g. 9 is divisible by 3).
- 2?
- 5?
Divide and test your answer.
65 ÷ 3
|
21 × 3 + 2
|
| a. 49 ÷ 5
= = = = |
= = = = |
| b. 65 ÷ 5
= = = = |
= = = = |
Solve the following:
|
How do you know if a number is divisible by 4? |
You need to go and do some research.
