1樓:寶寶
642-(36+132)÷4的簡便計算
解:直接運算最簡便,
原式=642-168÷4
=642-42
=600
2樓:518姚峰峰
642-(36+132)÷4的簡便計算
=642-(36+100+32)/4
=642-(9+25+8)
=642-42
=600
3樓:匿名使用者
=642-36÷4-132÷4
=642-9-33
=642-42
=600
計算,能簡便的要簡便計算. 642-(36+132)÷4 375+...
4樓:盈公子
(1)642-(36+132)÷4
=642-168÷4
=642-42
=600;
(2)375+125÷5×12
=375+25×12
=375+300
=675;
(3)868-(168+54)
=868-168-54
=700-54
=646;
(4)88×27+27×12
=(88+12)×27
=100×27
=2700;
(5)65×99+65
=65×(99+1)
=65×100
=6500;
(6)15×23-23×5
=(15-5)×23
=10×23
=230;
(7)125×32×5
=125×8×4×5
=(125×8)×(4×5)
=1000×20
=20000;
(8)35×202
=35×(200+2)
=35×200+35×2
=7000+70
=7070;
(9)98×15
=(100-2)×15
=100×15-2×15
=1500-30
=1470;
(10)3500÷4÷25
=3500÷(4×25)
=3500÷100
=35;
(11)25×28
=25×(4×7)
=25×4×7
=100×7
=700;
(12)545-167-145
=545-145-167
=400-167
=233.
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