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Friday, 15 February 2019
problem
strategy
answer
1.37 x 9
30 x 9=270
7 x 9=63
270+63
=333
2.47 x 15
40 x 10=400
40 x 5=200
7 x 10=70
7 x 5=35
400+200+70+35
=705
3.65 x 7
60 x 7=420
5 x 7=35
420+35
=455
4.81 x 9
80 x 9=720
1 x 9=9
720+9
=729
5.72 x 17
70 x 10=700
70 x 7=490
2 x 10=20
2 x 7=14
700+490+20+14
=1224
6.39 x 12
30 x 10=300
30 x 2 =60
9 x 10=90
9 x 2=16
300+60+90+16
=466
7.187 x 9
100 x 9=900
80 x 9=720
7 x 9=63
900+720+63
=1683
8.77 x 33
70 x 30=2100
70 x 3=210
7 x 30=210
7 x 3=21
2100+210+210+21
=2541

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1 comment:

  1. Jasel MMay 08, 2019 9:57 am

    Well done Jason, You did very well on showing us how to solve math
    problems.
    Keep up the good work.

    ReplyDelete

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