计算.①32×18+3060÷36②3014-25.7-4.3③2.75+345+10.2+114④7.8×3.4+745+7.8×535⑤12×(14+16-13)⑥[(4-11315)÷1.2+113]÷213.-数学
题文
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答案
①32×18+3060÷36 =576+85, =661; ②30
=30
=30
=
③2.75+3
=2.75+3.8+10.2+1.25, =(2.75+1.25)+(3.8+10.2), =4+14, =18; ④7.8×3.4+7
=7.8×3.4+7.8+7.8×5.6, =7.8×(3.4+5.6+1), =7.8×10, =78; ⑤12×(
=12×
=3+2+4, =9; ⑥[(4-1
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