Will there be enough for everyone in our class to have at least one fried chickpea, or will there be more?
This week one of our maths problems was to estimate how many chickpeas were in a chickpea can. This is what we did:
- First we looked at the can and the size of a chickpea and most of guessed there might be about 24-30 chickpeas.
- Next, we opened and drained the can and put them on a plate. We divided the plate into quarters and roughly estimated that we thought there were about 24 on each quarter of the plate. 24 x 4 = 96 so maybe 100 chickpeas in a chickpea can.
- Next, we counted in fours as Mrs Smith used a knife to push them back into the can. There was a lot of counting but we could see a pattern forming ... 16, 20, 24, 32, 36, 40, 44, 48, 52, 56, 60, 64, 68, 72, 76, 80, 84, 88, 92, 96, 100, 104, 108, 116, 120, 124....
- We aren't going to say how many but we can say that there were 22 in class that day and we could all have 10 each if Mrs Smith didn't have any!
- Can you use your 10 x facts, or divide or change it to a multiplication problem to work out how many chickpeas there were altogether?