整数小数四则运算
一:计算下面各题。
20-8×2÷4 420×(13+57)×90 66×38-987÷21 196÷4+56×12 16×50-36÷4 (13+47)×(52-18) 95÷(64-45) (58+37)÷(64-9×5) 120-36×4÷18+35 二:先说出他们的运算顺序,再计算。
7.5-0.26-1.74+2.5 0.25×13×4 18-9.3 32×0.125 0.4×(3.2—0.8)÷1.2 7.4×1.3-4.68÷0.9 82.3-40.5÷0.81×1.2 (9-0.45)÷(2.5+1.5×3) 213.6÷0.8÷0.3 16.6÷5.5× 1.7
三、简便计算下面各题。
89×99+89 52×15-5×52 55×102 89×32+89×68 125×64 45×25+75×45 23.5-2.8-7.2 55×99
58.65-(3.2+8.65) 99×125×8 3200÷25÷4 250÷8×4
44×12-88 125×24 0.134+2.66+0.866 7.5+4.9-6.5
3.07-0.38-1.62 1.29+3.7+2.71+6.3 8-2.45-1.55 7.6×0.8+0.2×7.6 0.85×199 0.25×8.5×4
1.28×8.6+0.72×8.6 12.5×0.96×0.8 10.4-9.6×0.35
0.8×(4.3×1.25) 3.12+3.12×99 28.6×101-28.6
14-7.32-2.68 2.64+8.67+7.36+11.33 2.31×1.2×0.5
(2.5-0.25)×0.4 9.16×1.5-0.5×9.16 3.6-3.6×0.5
四、计算,有些能简便的要简便计算:
33×13-99 87×52+87×48 6.81-4.4+5.19 125×24 65+320÷(20-15) 860-(48+12)×12 (750+240)÷(0.3×100)
25×(40+4) 24.56-(8.2+4.56) 88×99+88 20.5-6.3-3.7 (4.23+6.17)×0.8 0.86×15.7-0.86×14.7 2.4×102 五年级简便计算练习题
4.58-(2.58+1.5) 2.3÷0.25÷0.4
0.125×3.2×0.25 3.8×1.01
3.72×9.9+3.72×0.1 0.99×0.81+0.99×0.19+0.99
1.39×25-0.039×250 (4.16+4.16+4.16+4.16)×2.5
(2.5-0.25)×0.4 3.78×99+3.78 65÷(0.65×4)
4.9+0.1-4.9+0.1 5.52-(3.52-0.72)
2.6×0.5+7.4÷2 42.2×103 8.3×99
1.25×2×0.37×4 1.25×8-0.025×80
(2.31+6.69)÷0.03 35.2÷0.25÷0.4 3.6×10.1
6.81+6.81×99 0.25×185×40 3.94+34.3×0.2
2.08×(9.6÷2.4)÷4.8 10-1.8-7.2 0.43+3.57
0.9×0.8 7.28×99+7.28 4.3×50×0.2
9999×0.78+3333×0.66 (3.6×0.75×1.2)÷(1.5×24×0.18)
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
(1.25-0.125)×8 4.8×100.1 7.09×10.8-0.8×7.09
9.5×99 13.5×0.98 12.5×8.8
102×4.5 5.6×0.25 8×(20-1.25)
用简便方法计算
0.25×0.28 0.125×3.2×2.5 35×40.2
3.5×9.9 3.5×99+3.5 3.5×101-3.5 4.9+0.1-4.9+0.1 5.52-(3.52-0.72)
2.6×0.5+7.4÷2
1.25×2×0.37×4
(2.31+6.69)÷0.03
6.81+6.81×99
2.08×(9.6÷2.4)÷4.8 10-1.8-7.2
0.9×0.8
9999×0.78+3333×0.66
16.12×99+16.12 42.2×103 8.3×99 1.25×8-0.025×80 35.2÷0.25÷0.4 3.6×10.1 0.25×185×40 3.94+34.3×0.2 0.43+3.57 7.28×99+7.28 4.3×50×0.2 (3.6×0.75×1.2)÷(1.5×24×0.18) 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
(1.25-0.125)×8 4.8×100.1
9.5×99 13.5×0.98
102×4.5 5.6×0.25
7.09×10.8-0.8×7.09 12.5×8.8 8×(20-1.25)