资源描述
1、用竖式计算
0.396÷1.2= 0.756÷0.36= 15.6×13=
0.18×15= 0.025×14= 3.06×36=
0.04×0.12= 3.84×2.6≈ 5.76×3=
(保留一位小数)
7.15×22= 90.75÷3.3= 3.68×0.25=
16.9÷0.13= 1.55÷3.9 = 3.7×0.016=
13.76×0.8= 5.2×0.6 = 8.4×1.3 =
6.4×0.5= 4.48×0.4 = 5.25×5 =
35.4×4.2= 0.042×0.54= 0.76×0.32=
0.25×0.046= 2.52×3.4 = 1.08×25 =
0.12×1. 6= 4.8×0.25= 0.125×1.4≈
(保留两位小数)
2.5÷0.7= 10.1÷3.3= 0.43×0.28=
(保留三位小数) (商用循环小数)
10.75÷12.5= 3.25×9.04=
(用乘法验算) (用除法验算)
0.43×0.28= 6.45×0.73= 4.6×0.6=
8.9×0.05= 3.08×0.43= 1.5×26.7=
5.22÷29= 18.72÷3.6= 13.95÷3.1=
7.15×22= 90.75÷3.3 = 3.68×0.25=
2、脱式计算(能简算的要简算)
2.5×7.1×4 16.12×99+16.12 5.2×0.9+0.9
7.28×99+7.28 4.3×50×0.2 64-2.64×0.5
26×15.7+15.7×24 (2.275 +0.625)×0.28
3.94+34.3×0.2 1.2×(9.6÷2.4)÷4.8
8.9×1.1×4.7 2.7×5.4×3.9 3.6×9.85-5.46
8.05×3.4+7.6 6.58×4.5×0.9 2.8×0.5+1.58
32+4.9-0.9 4.8-4.8×0.5 (1.25-0.125)×8
4.8×100.1 56.5×99+56.5 7.09×10.8-0.8×7.09
4.85 + 0.35 ÷ 1.4 8.7 × 17.4 - 8.7 × 7.4
12.5×0.4×2.5×8 0.87×3.16+4.64 9.5×101
0.68 ÷(5.2 -3.5)× 1.25 40.5 ÷ 0.81 × 0.18
4.8 ×(15 ÷ 2.4) 2.13.×0.×8257
6.81+6.81×99 0.25×185×40 4.4×0.8-3.4×0.8
(9.37+9.37+9.37+9.37)× 2.5 4.2.×1.+1.×1.75
2.37×6.3+2.37×3.7 2.5×1.25×0.32 3.8×10.1
2.5×(3.8×0.04) 7.69×101 0.25×39+0.25
0.125×72 46×0.33+54×0.33 0.25×185×40
(8×5.27) ×1.25 6.81+6.81×99 3.94+34.3×0.2
6.8×0.75÷0.5 3.75÷0.125–2.75 1.53+23.4÷7.2
9.5×99 13.5×0.98 12.5×8.8
6.81+6.81×99 0.25×185×40 2.08×(9.6÷2.4)÷4.8
二、解方程:
54-X=24 7X=49 5.6x+4.4x=5.2
13+A=28.5 2.4X=26.4 7.5x-3x=18
5×1.3-2x=5.5 24x+6x=63.6 6×5+2X=44
5×1.3-2x=5.5 24x+6x=63.6 14X-8X=12
20X-50=50 28+6X=88 32-22X=10
3X+5X=48 10X×(5+1)=60 99X+X =100
X+3=18 X-6=12 56-2X=20
4y+2=6 x+32=76 3x+6=18
16+8x=40 2x-8=8 4x-3×9=29
8x-3x=105 x-6×5=42 x+5=7
2x+3=10 12x-9x=9 6x+18=48
56x-50x=30 5x=15 78-5x=28
32y-29=3 5x+5=15 89x-9=80
100-20x=20 55x-25x=60 76y-75=1
23y-23=23 4x-20=0 80y+20=100
53x-90=16 2x+9x=11 12y-12=24
80+5x=100 7x-8=6 65x+35=100
19y+y=40 25-5x=15 79y+y=80
42x+28x=140 3x-1=8 90y-90=90
80y-90=70 78y+2y=160 88-x=80
9-4x=1 20x=40 65y-30=100
51y-y=100 85y+1=-86 45x-50=40
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