3 运动定律与简便运算
递等式计算(能简算的要简要).
(1)12.5×6.4×2.5×0.5
(2)10.1﹣10.1÷1.01
(3)0.19×2.8+0.81×2.8
(4)22.32÷[100÷(12.5+7.5)].
能简算的要简算.
9×3.6﹣4.84÷0.4 10.7×16.1﹣15.1×10.7
8×〔13﹣(6.88+5.22)〕 1.2÷[2.5×(4.3﹣2.7)].
计算,能简算的要简算.
1.08×0.8÷0.9 3.4×5.3+6.6×5.3 0.25×12.5×0.8×4
7.28+3.2÷2.5 1.8×102 44.28÷0.9÷4.1.
计算,能简算的要简算.
64×7.6 5.68×7.5 184.6÷2.8
0.8×(1.25+50) 47.6÷4÷2.5 36.45÷(0.82+3.4×0.2)
4.3×68+43×3.2 6.75÷[0.9÷(0.3×0.4)] 3.72×0.1+3.72×8.9.
脱式计算,能简便的要简便.
1.25×9.76×80 3.2×2.5 23.6×99+23.6
36.7+63.3×2.4 54.3÷4÷2.5 0.75×18÷0.15.
下面各题,能简算的要简算.
(1)30.1﹣16.8÷3.5×6.2
(2)27×99
(3)×2.5××0.4
(4)÷8+×
(5)15××(×)
(6)÷[(﹣)÷].
计算,能简算的要简算.
0.75×18÷0.15
6.5×9.9
5.79÷0.125÷0.8
9.07+22.78÷3.4
4.7×0.12+4.7×0.88
12.5×8×0.025×4.
脱式计算(用自己喜欢的方法计算).
102×4.5= 4.5×7.3+2.7×4.5 0.85×0.4×2.5
8×(20﹣1.25) 125×0.32×25 (15.6+1.32÷0.3)×0.5.
计算下面各题,能简算的要简算.
①35×1.25×2×0.8
②4.8÷(1.2+0.4)
③3.9×10.1.
④78+3.78×99
⑤(7.7+1.547)÷0.7.
21.73+(7.02﹣1.73)+1.98 312﹣12×16+24 40﹣4.72+5.28
57×39﹣39+39×44 9000÷36 30﹣[17.8+(6.2+38÷10)].
递等式计算(能简便的要简便计算)
1.25×3.2×0.8 14.5×102 4.7×4.7+4.7+4.7×4.3
9.6÷0.4×0.25 8.68﹣8.68÷0.56×0.5 29.7÷(5.85÷0.65)
能简算的要简算.
15.6﹣8.9+5.6 7.02+3.8+3.98+2.2 68.4﹣(4.7+8.4)
35.8﹣(40﹣44.2) 100﹣13.72﹣36.82 47.35+16.88﹣7.35.
怎样算简便就怎样算.
(1)4.32+5.43+6.68 (2)15.17﹣6.8﹣3.2 (3)34.82﹣(4.82+15.2)
(4)15.27+4.72﹣5.28 (5)4.02﹣3.5+0.98 (6)5.8﹣4.5+5.8﹣4.5.
能简算的用简便方法算.
9.28+1.82÷0.7 (71.2﹣71.2×0.9)÷0.25 6.5×2.3+6.5×6.7+6.5
7.8÷0.25÷4 1.37×99+1.37 4.8×6.2﹣12.4.