Problem | Strategy | Answer
|
24x6
|
10x6=60
10x6=60
4x6=24
24+120=144
|
144
|
33x6
|
20x6=120
10x6=60
120+60=180
3x6=18
180+18=198
|
198
|
43x7
|
20x7=140
20x7=140
140+70+70+=280
3x7=21
280+21=301
|
301
|
62x7
|
20x7=140
20x7=140
20x7=140
140+140+140=380
2x7=14
14+380=394
|
434
|
56x9
|
20x9=180
20x9=180
10x9=90
180+180+90=450
6x9=54
450+54=504
|
504
|
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