To the left, this is my multiplication pyramid for week 8 of term 3 for 2017. You must times the 2 bottom numbers together and work up the pyramid to get the correct answer at the top.
I was asked to show my working for the top 3 layers of the pyramid. Here we go!
First question was: 75 x 180 = ??
I went, 75 x 100 = 7500. After that I did, 75 x 80 = 6000. Once I had found those answers out, I added them together and I got, 13,500.
Next question was: 180 x 48 = ??
At first I went, 180 x 40 = 7200. After that, I did, 180 x 8 = 1440.
Once that was done, I had to add them together and I ended up with, 8640.
Last question was: 13500 x 8640
First I did, 13500 x 8000 = 108,000,000
Then I did, 13500 x 640 = 8640000
I had to ad them together, and ended up with, 116,640,000
THE END
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