Problems
|
Strategy
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Answers
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67x9
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70x9=630
3x9=27
630-27=603
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603
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92x8
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90x8=720
2x8=16
720+16=736
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736
| |
121x7
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120x7=840
1x7=7
840+7=847
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847
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175x6
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170x6=1020
5x6=30
1020+30=1050
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1050
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215x7
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210x7=1470
5x7=35
1470+35=1505
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1505
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