青岛版四年级上册脱式计算专项练习.doc
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32×23+5252+18×1234×19-18
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16×28+3411×12+10137×21-61
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61+12×23043+121×2345+132×25
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125×31+20148+52×21287+35×100
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99+146×90180×33+1008000-100×76
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138+50×40160+81×90199+50×56
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56×76+5618×11+251×87+300
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1