1楼:甜子
(1)0.25×[(2.8+4.4)÷1.2],=0.25×[7.2÷1.2],
=0.25×6,
=1.5;
(2)3.7×9.16+6.3×9.16,=(3.7+6.3)×9.16,
=10×9.16,
=91.6;
(3)[32-(1.95-1.95)]÷1.6,=[32-0]÷1.6,
=32÷1.6,
=20;
(4)5.7×10.1,
=5.7×(10+0.1),
=5.7×10+5.7×0.1,
=57+0.57,
=57.57.
脱式计算,能简算的要简算. 0.25×[(2.8+4.4)÷1.2] 3.7×
2楼:林沮坟
(1)0.25×[(2.8+4.4)÷1.2],=0.25×[7.2÷1.2],
=0.25×6,
=1.5;
(2)3.7×9.16+6.3×9.16,=(3.7+6.3)×9.16,
=10×9.16,
=91.6;
(3)[32-(1.95-1.95)]÷1.6,=[32-0]÷1.6,
=32÷1.6,
=20;
(4)5.7×10.1,
=5.7×(10+0.1),
=5.7×10+5.7×0.1,
=57+0.57,
=57.57.
脱式计算(能简算的要简算)1.25×3.2×8 ...
3楼:你猜
(1)1.25×3.2×8
=1.25×8×3.2
=10×3.2
=32;
(2)0.45×6.2+3.8×0.45
=0.45×(6.2+3.8)
=0.45×10
=4.5;
(3)2.7×9.9
=2.7×(10-0.1)
=2.7×10-2.7×0.1
=27-0.27
=26.73;
(4)15×10.2
=15×(10+0.2)
=15×10+15×0.2
=150+3
=153;
(5)0.25×[(2.8+4.4)÷1.2]=0.25×[7.2÷1.2]
=0.25×6
=1.5;
(6)[32-(1.95-1.95)]÷1.6=[32-0]÷1.6
=32÷1.6
=20.
脱式计算能简便的要简便 4.92÷4.1÷0.3 2.8x4+7.2÷0.25
4楼:匿名用户
4.92÷4.1÷0.3
=1.2÷0.3=4
脱式计算(能简算的要简算) ⑴1/4÷(2/3-3/2×1/3) ⑵24×(1/6+3/8+7/
5楼:昨夜星辰吉日
⑴1/4÷(2/3-3/2×1/3)
=1/4÷(2/3-1/2)=1/4÷(4/6-3/6)=1/4÷1/6=1/4x6=6/4=3/2;
⑵24×(1/6+3/8+7/12)=24x1/6+24x3/8+24x7/12=4+9+14=27;
⑶1/8×58+1/8×41+1/8=1/8x(58+41+1)=1/8x100=100/8=12.5.
6楼:
⑴1/4÷(2/3-3/2×1/3)=3/2
⑵24×(1/6+3/8+7/12)=27
⑶1/8×58+1/8×41+1/8=25/2
7楼:匿名用户
(1)1/4÷(2/3一3/2×1/3)=1/4÷(4/6一3/6)=1/4×6/1=3/2
脱式计算:能简算的要简算。,脱式计算:一、能简算的要简算。③4/7×5/9+3/7×5/9 = = = =
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