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口算:75+25=808-108=730-230=570+100=84-25=150+70=

题目详情
口算:
75+25= 808-108= 730-230= 570+100= 84-25=1 50+70=
口算:
75+25= 808-108= 730-230= 570+100= 84-25=1 50+70=
口算:
75+25= 808-108= 730-230= 570+100= 84-25=1 50+70=
口算:
75+25= 808-108= 730-230= 570+100= 84-25=1 50+70=
口算:
75+25= 808-108= 730-230= 570+100= 84-25=1 50+70=
75+25= 808-108= 730-230= 570+100= 84-25=1 50+70=
75+25= 808-108= 730-230= 570+100= 84-25=1 50+70= 75+25= 808-108= 730-230= 570+100= 84-25=1 50+70= 75+25= 808-108= 730-230= 570+100= 84-25=1 50+70=
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答案和解析
75+25=100, 808-108=700, 730-230=500, 570+100=670, 84-25=59, 50+70=120,
75+25=100, 808-108=700, 730-230=500, 570+100=670, 84-25=59, 50+70=120,
75+25=100, 808-108=700, 730-230=500, 570+100=670, 84-25=59, 50+70=120,
75+25=100, 808-108=700, 730-230=500, 570+100=670, 84-25=59, 50+70=120,
75+25=100, 808-108=700, 730-230=500, 570+100=670, 84-25=59, 50+70=120,
75+25=100, 808-108=700, 730-230=500, 570+100=670, 84-25=59, 50+70=120, 75+25=100, 808-108=700, 730-230=500, 570+100=670, 84-25=59, 50+70=120, 75+25=100, 75+25=100, 808-108=700, 808-108=700, 730-230=500, 730-230=500, 570+100=670, 570+100=670, 84-25=59, 84-25=59, 50+70=120, 50+70=120,