3 运动定律与简便运算
计算下面各题.(能简算的要简算)
(1)40.5÷0.5+10.75 (2)213.6÷0.8÷0.3 (3)39.22÷3.7×2.5
(4)1.25×2.5×32 (5)0.24×103 (6)13.7×5+6.3×5.
神机妙算细又巧!
14.64+3.7×2.8
72.5×0.4﹣81.2÷56
13.8×0.45+138×0.055
(1.5÷4)÷(0.15÷4)
(1.25+1.25+1.25+1.25)×0.8×0.25.
混合运算(能简便的一定要简便)(18%)
4.58+3.38+(5.48+6.62)
0.25×32×0.125
73.75﹣(4.3+8.75)
4.2×0.75+0.75×5.8
0.98×99+0.98
6.38÷0.05÷20.
下面各题怎样简便就怎样计算
(1)12.64﹣(3.96+4.64)
(2)36.26﹣4.78+3.74
(3)7.34+7.57+12.66+6.43
(4)78.65﹣23.12﹣14.88.
递等式计算,能简算的用简便方法算:
8.46﹣8.46÷4+4.985 43.56÷12.5 6.4×3.28+4.6×3.28﹣3.28 99.9×10.1.
计算,能简算的要简算
7.26+3.2÷2.5 14.6﹣4.6×2.8 0.8+0.8+…+0.8+15×0.2 15个0.8
14.5×102 4.05÷0.5﹣1.14 9.99×99+9.99.
选择最适合的方法,写出递等式计算的过程
39.6﹣6.53+3.47. 0.0125×32×0.25. [90﹣(8.25÷0.6+1.25)]×0.01.
38×2.5+76+38×5.5. 3.6×31.4+43.9×6.4. 5.7×5.7+5.7×4.2+5.7×0.1.
计算下面各题.(能简算的要简算,并写出主要的计算过程)
6.7×7.3+6.7×1.7+6.7 1.25×0.25×32 21.36÷0.8﹣12.9
25.6﹣25.6×0.8 7.65×101﹣7.65 3.73÷2.5÷4.
用递等式计算,能简算的要简算.
(1)100.18﹣9.6+18.53
(2)0.963+23.89﹣0.063
(3)2.5×0.3÷2.5×0.3
(4)2.8×10.1
(5)51×1.2﹣1.2
(6)0.36×(15.23﹣9.63)
计算,能简算的要简算.
18×5.46+1.8×4.54= ; 0.32×0.25×12.5= ; 21÷0.25÷0.4= ;
02×9.9+0.1= ; 0.25×4.78×4= ; 3.2×10.2= .
脱式计算,能简算的要简算.
0.25×[(2.8+4.4)÷1.2] 3.7×9.16+6.3×9.16
[32﹣(1.95﹣1.95)]÷1.6 5.7×10.1.
计算下面各题,能用简便算法的要用简便法计算.
(1)0.25×8.75×4 (2)25.8×7+3×25.8
(3)10÷0.2÷2.5 (4)21.36÷0.8﹣12.9.
脱式计算,能简算的要简算
0.76×5.8+0.76×4.2 1.25×13.7×8 10﹣6.8﹣3.2
5.81+8.3+4.19+11.7 0.4×(2.5+0.25) 3.78﹣1.46+1.54.
怎样计算简便就怎样计算.
5.5×13.7+6.7×5.5 3.8+4.29+5.71+4.2 102×4.5
0.125×32×0.25 108.8﹣(97+8.8) 25.7+37.8﹣5.7.
6.36﹣2.22+2.64﹣0.78
12.5×(8﹣0.8)×4
1.25×6.4×0.25×0.2
7.5×10﹣7.5×6.5+7.5×0.5
(2.6×1.5+1.1)﹣2.5×8
8÷[(40.75﹣9.5)×0.4]﹣0.6.
用简便方法计算
8.8×0.125 2.5×1.25×32 7.6×5.3+3.7×7.6
37÷0.25÷4 3.85×101﹣3.85 (23+4.6)÷2.3.
脱式计算,能简算的要简算.
(1)10.5+0.5÷0.5
(2)105×7.3﹣7.3×4﹣7.3
(3)29.07﹣22.78÷3.4
(4)4.8×0.25
(5)0.8×(12.5﹣1.25)
用简便方法计算.
7.85+6.76+2.15 18.43﹣3.76﹣7.24 21.65+(4.8﹣3.65)
9.64﹣(4.64﹣1.23) 2.7+17.6+3.3﹣5.6 9.87﹣3.5+2.13﹣8.5.
50﹣12.18+0.82 4.86﹣9.61+5.14﹣0.39 27.8×101﹣27.8
3.96÷(2.5×0.396) 0.999×5.8 (125+12.5+1.25)×8.