小学五年级数学奥数简便计算
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=(500+11)×0.71+11×(10-0.71)+525×(1-0.71)
=500×0.71+11×0.71+11×10-11×0.71+525-525×0.71
=500×0.71-525×0.71+11×10+525
=11×10+525-25×0.71
=110+525-25×(0.7+0.01)
=110+525-25×0.7-25×0.01
=110+525-17.5-0.25
=617.25
=500×0.71+11×0.71+11×10-11×0.71+525-525×0.71
=500×0.71-525×0.71+11×10+525
=11×10+525-25×0.71
=110+525-25×(0.7+0.01)
=110+525-25×0.7-25×0.01
=110+525-17.5-0.25
=617.25
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=(500+11)x 0.71+11x (10-0.71)+(500+25)x (1-0.71)
=500x0.71+11x0.71-11x0.71+11x10+500+25-500x0.71-25x0.71
=110+500+25-25x0.71
=110+500+25x(1-0.71)
=610+25x(0.4-0.1-0.01)
=610+10-2.5-0.25
=617.25
=500x0.71+11x0.71-11x0.71+11x10+500+25-500x0.71-25x0.71
=110+500+25-25x0.71
=110+500+25x(1-0.71)
=610+25x(0.4-0.1-0.01)
=610+10-2.5-0.25
=617.25
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511×0.71+11×9.29+525×0.29
=511×0.71+11×9+11×0.29+511×0.29+14×0.29
=511×0.71+511×0.29+11×0.29+14×0.29+11×9
=511×(0.71+0.29)+(11+14)×0.29+11×9
=511+25×0.29+99
=610+25×0.3-25×0.01
=610+7.5-0.25
=617.25
=511×0.71+11×9+11×0.29+511×0.29+14×0.29
=511×0.71+511×0.29+11×0.29+14×0.29+11×9
=511×(0.71+0.29)+(11+14)×0.29+11×9
=511+25×0.29+99
=610+25×0.3-25×0.01
=610+7.5-0.25
=617.25
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