In Room 23 we have been learning different strategies to solve multiplication and division problems. This week we had the following problem:
Rose – I like to use the bar model because it is a visual tool. If you have the problem 24÷6 you put the 24 up the top and draw six little boxes underneath. The number in each box must be the same, and it would be 6 in each box, so 24÷4=6.
Georgie – I used a number line. I started at zero and I jumped by 4 which was 4, I added another 4 which was 8 and I did this until I reached 24. I worked out that 6×4=24.
Oli – I used counters, and I put them into equal groups. I started with two groups of 12. Then I made groups of 4 and there were 6 counters in each group. 24÷2=12, 24÷4=6.
Zara E – I used the halving strategy. When I had 24, I halved it to make 12. I halved it again to make 6. You can halve it once more to make 3.
I worked out that 24÷2=12, 24÷4=6 and 24÷3=8. I then knew the family fact so other answers could be 24÷12=2 , 24÷6=4 and 24÷8=3.
Lola – I drew trees and I put 4 apples on each tree. I did the sum 4 + 4, and then I used repeated addition until I reached 24.
Charlie – I use counters. I put them into equal rows. This is called an array.
Evgenia – Let’s say the problem is 10÷5. I work out how many 5s are in 10 and the answer is 2. With 24, I could find out how many 12s are in 24. The answer is 2.