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370÷7= 784-685= 76×15＝
486÷2= 607÷5= 900-807= 915÷3=
560÷4= 458+542= = =
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56+89×77 35+49×82 47+99×89
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58+85×33 49+65×33 79+92×93
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39+83×55 89+56×61 88+38×49
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125+82×37 152+58×33 117+58×77
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196+55×31 198+12×89 137+22×88
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132+12×37 250+23×38 440+13×36
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199+25×89 819+49×90 418+57×67
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516+27×36 315+57×34 147+28×36
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518+18×47 419+29×54 128+28×19
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319+32×56 189+42×37 818+41×53
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32+65×37 850+27×38 269+85×39
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215+35×47 652+78×36 107+29×64
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307+77×83 635+57×86 556+38×87
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