口算:37+55= 60+370= 54+46= 513-31= 42-29= 142+703= 100-86= 99+78= 16×50= 12×8= 76
口算:37+55=60+370=54+46=513-31=42-29=142+703=100-86=99+78=16×50=12×8=76×4=5×32=23×5=28×...
口算:37+55= 60+370= 54+46= 513-31= 42-29= 142+703= 100-86= 99+78= 16×50= 12×8= 76×4= 5×32= 23×5= 28×2= 5400÷90= 824÷8= 480÷60= 780÷60= 140÷70= 52×11= 15×6= 364÷1= 0÷897= 120÷5= 72÷3= 88÷22= 24×10= 4×25= 13×7= 20×90= 800÷20= 4700÷47= 903÷3= 2400÷300= 125×8= 1280÷4= 25×6×4= 34×5×2= 200-58-42= 83×6+17×6=
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37+55=92, | 60+370=430, | 54+46=100, | 513-31=482, | 42-29=13, |
142+703=845, | 100-86=14, | 99+78=177, | 16×50=800, | 12×8=96, |
76×4=304, | 5×32=160, | 23×5=115, | 28×2=56, | 5400÷90=60, |
824÷8=103, | 480÷60=8, | 780÷60=13, | 140÷70=2, | 52×11=572, |
15×6=80, | 364÷1=364, | 0÷897=0, | 120÷5=24, | 72÷3=24, |
88÷22=4, | 24×10=240, | 4×25=100, | 13×7=91, | 20×90=1800, |
800÷20=40, | 4700÷47=100, | 903÷3=301, | 2400÷300=8, | 125×8=1000, |
1280÷4=320, | 25×6×4=600, | 34×5×2=340, | 200-58-42=100, | 83×6+17×6=600. |
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