This week in literacy we had to do a water usage sheet to teach people how to save the rivers and streams

I have also been working on my multiplication sheet. I have been using rounding and compensation to help me solve these problems.
Exercise 2
What to do
Use the information given to you to derive the answer to a similar problem.
1) If 9 × 20 = 180 what is 9 × 19 171
2) If 8 × 30 = 240 what is 8 × 29 232
3) If 7 × 40 = 280 what is 7 × 39 271
4) If 5 × 50 = 250 what is 5 × 49 245
5) If 3 × 60 = 180 what is 3 × 58 184
6) If 2 × 70 = 140 what is 2 × 67 184
7) If 4 × 80 = 320 what is 4 × 78 312
8) If 2 × 90 = 180 what is 2 × 86 172
here is my writing of the coming storm
the end |
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