- If you are multiplying five times and even number. Take half
of the number and put a zero after it.
(The FIVES are half way through
the 0 - 9 multiplication facts. This helps you remember to take
half of each number)
- For example 5 x 6 (6 is even)
- Take half of 6 (3)
- Add a zero - 30
- Another example 5 x 8
- Take half of 8 (4)
- Add a zero - 40
- If you are multiplying 5 times an odd number, subtract 1 from the
number and halve the number. Then put a 5 after it.
- For example 5 x 7 (7 is odd)
- Subtract one from 7 (6)
- Take half of 6 (3)
- Add a five - 35
- Another example 5 x 9
- Subtract one from 9 (8)
- Take half of 8 (4)
- Add a five - 45
- Use the chart below to quiz yourself.
Look at the fact below and think of the answer.
Check it by hovering the mouse over the problem.
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Check out the Fives - Method 1
On to Lesson 10 - Nines |
