计算下面各题，能简算的要简算．102×45= 8.76-5.29-2.71+1.24= 3.31-18.3÷7×0.5= 1-（ 1
计算下面各题，能简算的要简算．102×45=8.76-5.29-2.71+1.24=3.31-18.3÷7×0.5=1-（15+13）×158=24×5143+51×19...
计算下面各题，能简算的要简算．102×45= 8.76-5.29-2.71+1.24= 3.31-18.3÷7×0.5= 1-（ 1 5 + 1 3 ）× 15 8 = 24× 51 43 +51× 19 43 = 9 14 ÷（ 5 6 - 3 4 ）× 7 24 =
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sabero2
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102×45
=100×45+2×45
=4500+90
=4590；
8.76-5.29-2.71+1.24
=8.76+1.24-（5.29+2.71）
=10-8
=2；
3.31-18.3÷7×0.5
= 3.31-18 × ×
= 3.31- × ×
=3 -
= -
= -
=
= 2 ；
1-（ + ）×
=1 - × - ×
= 1- -
=0；
24× +51×
=24× +19×
=（24+19）×
=43×
=51；
÷（ - ）×
= ÷ ×
= ×12×
= ． |
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