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展开全部
355+260+245=355+245+260=600+260=860
125×32=125×8×4=1000×4=4000
56×101=56×(100+1)=56×100+56×1=5600+56=5656
175×56+25×56=56×(175+25)=56×200=11200
645-180-245=645-245-180=400-180=220
42×99+42=42×(99+1)=42×100=4200
3500÷14÷5=3500÷(14×5)=3500÷70=50
2100÷42=2100÷(6×7)=2100÷7÷6=30÷6=5
50×25×20×40=(50×20)×(25×40)=1000×1000=1000000
4576-(2576+850)=4576-2576-850=2000-850=1150
88×125-8×125=125×(88-8)=125×80=10000
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125×32=125×8×4=1000×4=4000
56×101=56×(100+1)=56×100+56×1=5600+56=5656
175×56+25×56=56×(175+25)=56×200=11200
645-180-245=645-245-180=400-180=220
42×99+42=42×(99+1)=42×100=4200
3500÷14÷5=3500÷(14×5)=3500÷70=50
2100÷42=2100÷(6×7)=2100÷7÷6=30÷6=5
50×25×20×40=(50×20)×(25×40)=1000×1000=1000000
4576-(2576+850)=4576-2576-850=2000-850=1150
88×125-8×125=125×(88-8)=125×80=10000
如果你认可我的回答,敬请及时采纳,
~如果你认可我的回答,请及时点击【采纳为满意回答】按钮
~~手机提问的朋友在客户端右上角评价点【满意】即可。
~你的采纳是我前进的动力
~~O(∩_∩)O,记得好评和采纳,互相帮助
展开全部
355+260+245
=(355+245)+260
=600+260
=860
125X32
=125X8X4
=1000X4
=4000
56X101
=56X(100+1)
=56X100+56X1
=5600+56
=5656
(5656真是吉祥的数字,<。)#)))≦)
175X56+25X56
=(175+25)X56
=200X56
=1120
645—180—245
=645—245—180
=400—180
=220
42X99+42
=42X(99+1)
=42X100
=4200
3500÷14÷5
=3500÷(14X5)
=3500÷70
=50
2100÷42
=(3X700)÷(3X14)
=3X700÷3÷14
=700÷14
=50
50X25X20X10
=(50X10)X(25X20)
=500X500
=250000
4576—(2576+850)
=4576—2576—850
=3000—850
=2150
88X125—8X125
=(88—8)X125
=80X125
=10000
=(355+245)+260
=600+260
=860
125X32
=125X8X4
=1000X4
=4000
56X101
=56X(100+1)
=56X100+56X1
=5600+56
=5656
(5656真是吉祥的数字,<。)#)))≦)
175X56+25X56
=(175+25)X56
=200X56
=1120
645—180—245
=645—245—180
=400—180
=220
42X99+42
=42X(99+1)
=42X100
=4200
3500÷14÷5
=3500÷(14X5)
=3500÷70
=50
2100÷42
=(3X700)÷(3X14)
=3X700÷3÷14
=700÷14
=50
50X25X20X10
=(50X10)X(25X20)
=500X500
=250000
4576—(2576+850)
=4576—2576—850
=3000—850
=2150
88X125—8X125
=(88—8)X125
=80X125
=10000
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