1.6÷ 3/8 – 3/8 ÷6
=1/6x(3/8-3/8)
=1/6x0
=0
2.4/7 × 5/9 + 3/7 × 5/9
=(4/7+3/7)x5/9
=1x5/9
=5/9
3.5/2 -( 3/2 + 4/5 )
=5/2-3/2-4/5
=1-4/5
=1/5
4.6 ×( 1/2 + 2/3 )
=6x1/2+6x2/3
=3+4
=7
5.8 × 4/5 + 8 × 11/5
=8x(4/5+11/5)
=8x3
=24
6.31 × 5/6 – 5/6
=(31-1)x5/6
=30x5/6
=25
7.4/5 × 25/16 + 2/3 × 3/4
=5/4+1/2
=5/4+2/4
=7/4
8.101 × 1/5 – 1/5 × 21
=(101-21)x1/5
=80x1/5
=16
脱式计算六年级300道过程及答案
还是要把基础学好了,才可以把成绩提高的,在网上是问不到答案的哈
多背书,是有好处的 多思考,才会有进步
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脱式计算六年级300道
1.3/7 × 49/9 - 4/3
2.8/9 × 15/36 + 1/27
3.12× 5/6 – 2/9 ×3
4.8× 5/4 + 1/4
5.6÷ 3/8 – 3/8 ÷6
6.4/7 × 5/9 + 3/7 × 5/9
7.5/2 -( 3/2 + 4/5 )
8.7/8 + ( 1/8 + 1/9 )
9.9 × 5/6 + 5/6
10.3/4 × 8/9 - 1/3
11.7 × 5/49 + 3/14
12.6 ×( 1/2 + 2/3 )
13.8 × 4/5 + 8 × 11/5
14.31 × 5/6 – 5/6
15.9/7 - ( 2/7 – 10/21 )
16.5/9 × 18 – 14 × 2/7
17.4/5 × 25/16 + 2/3 × 3/4
18.14 × 8/7 – 5/6 × 12/15
19.17/32 – 3/4 × 9/24
20.3 × 2/9 + 1/3
21.5/7 × 3/25 + 3/7
22.3/14 ×× 2/3 + 1/6
23.1/5 × 2/3 + 5/6
24.9/22 + 1/11 ÷ 1/2
25.5/3 × 11/5 + 4/3
26.45 × 2/3 + 1/3 × 15
27.7/19 + 12/19 × 5/6
28.1/4 + 3/4 ÷ 2/3
29.8/7 × 21/16 + 1/2
30.101 × 1/5 – 1/5 × 21
300道脱式计算及答案
(1)2.5*32*0.125
=(2.5*4)*(8*0.125)
=10*1
=10
(2)3.5-7+6.5
=3.5+6.5-7
=3
(3)1.2×2.5+0.8×2.5
=2.5(1.2+0.8)
=25
(4)8.9×1.25-0.9×1.25
=1.25(8.9-0.9)
=10
(5)12.5×7.4×0.8
=12.5×0.8×7.4
=74
(6)6.5×9.5+6.5×0.5
=6.5×(9.5+0.5)
=6.5×10
=65
(7)0.35×1.6+0.35×3.4
=0.35*(1.6+3.4)
=0.35*5
=1.75
(8)6.72-3.28-1.72
=6.75-(3.28+1.72)
=6.75-5
=1.75
(9)0.45+6.37+4.55
=0.45+4.55+6.37
=5+6.37
=11.37
(10)28×12.5-12.5×20
=(28-20)*12.5
=8*12.5
=100
(11)23.65-(3.07+3.65)
=23.65-3.65-3.07
=20-3.07
=16.93
(12)(4+0.4×0.25)8×7×1.25
=(4+1)*7*10
=5*7*10
=350
(13)1.65×99+1.65
=1.65*(99+1)
=1.65*100
=165
(14)27.85-(7.85+3.4)
=27.85-7.85+3.4
=20+3.4
=23.4
(15)48×1.25+50×1.25×0.2×8
7.8×9.9+0.78
=7.8*(9.9+0.1)
=7.8*10
=78
(16)4.8×46+4.8×54
=(46+54)*4.8
=100*4.8
=480
(17)673-327-173
=673-(327+173)
=673-500
=173
(18)4.44*2.5
=1.11*(4*2.5)
=1.11*10
=11.1
(19)3.5÷1.4
=(3.5÷0.7)÷(1.4÷0.7)
=5÷2
=2.5
(20)1+2+3+4+5……+99+100
=(1+99)+(2+98)+(3+97)+.+(49+51)+50
=(100÷2-1)*100+50
=4900+50
=4950
脱式计算,例如加减乘除的脱式计算,60x4+350÷70-30,第一步计算60x4=240,第二步计算350÷70=5,第三步把各步骤所得结果相加减得:240+5一30=215。