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请帮我把下面算式用简便方法计算
2015-04-12 · 知道合伙人教育行家
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1.15*(99+1)
2.303+97+472
3.416除(4*8)
等于416除4除8
4.36*(5*5)
等于36*5+36*5
5.125*(8*9)
125*8+125*9
6.3100除31除25
2.303+97+472
3.416除(4*8)
等于416除4除8
4.36*(5*5)
等于36*5+36*5
5.125*(8*9)
125*8+125*9
6.3100除31除25
追答
*代表乘
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15×99+15
=15×(99+1)
=15×100
=1500
97+472+303
=(97+303)+472
=400+472
=872
416÷32
=416÷(8×4)
=416÷8÷4
=52÷4
=13
36×25
=(9×4)×25
=9×(4×25)
=9×100
=900
72×125
=(9×8)×125
=9×(8×125)
=9×1000
=9000
3100÷(31×25)
=3100÷31÷25
=100÷25
=4
=15×(99+1)
=15×100
=1500
97+472+303
=(97+303)+472
=400+472
=872
416÷32
=416÷(8×4)
=416÷8÷4
=52÷4
=13
36×25
=(9×4)×25
=9×(4×25)
=9×100
=900
72×125
=(9×8)×125
=9×(8×125)
=9×1000
=9000
3100÷(31×25)
=3100÷31÷25
=100÷25
=4
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(99+1)×15,97+303+472,416÷30+4l6÷2,36×20+36×5,125×70+125×2,3100÷31÷25
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15x99+15
=15x(99+1)
=15x100
=1500
97+472+303
=(97+303)+472
=400+472
=872
416/32
=416/(8X4)
=416/8/4
=52/4
=13
36x25
=6x6x5x5
=(6x5)x(6x5)
=30x30
=900
72x125
=9x8x125
=9x(8x125)
=9x1000
=9000
3100/(31x25)
=3100/31/25
=100/25
=4
=15x(99+1)
=15x100
=1500
97+472+303
=(97+303)+472
=400+472
=872
416/32
=416/(8X4)
=416/8/4
=52/4
=13
36x25
=6x6x5x5
=(6x5)x(6x5)
=30x30
=900
72x125
=9x8x125
=9x(8x125)
=9x1000
=9000
3100/(31x25)
=3100/31/25
=100/25
=4
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