3 运动定律与简便运算
能用简便方法计算就用简便方法计算
①6.9×3.6﹣4.84÷0.4 ②4.75+8.4÷(9.2﹣6.8)
③1.2÷[2.5(4.3﹣2.7)] ④4.5×(0.75﹣0.356)+9.23
⑤0.88÷0.8+3.2×1.25 ⑥5.4+(0.63+0.555÷1.5)
计算下面各题,能简算的要简算.
10﹣3.57﹣5.43 34.82﹣(3.82+15.2) 5.86﹣0.78+0.22 63.7﹣2.36﹣13.7﹣5.64.
怎样简便怎样算.
7.28﹣(0.8+3.28) 3.15+1.83+6.85+2.17 13.86﹣2.99
13.92﹣(3.92﹣2.74) 2.72﹣3.98+5.28﹣2.02 0.27﹣4.9+4.83+2.9.
计算,能简算的要简算.
3.25×0.45+6.75×0.45 7.5×102 5.64÷0.125÷8
26.9×0.48÷2.69 5.4×2.5×0.7 39.5×99+39.5.
递等式计算,能简算的要简算:
9.7﹣22.78÷3.4 1.05÷0.7+18.9 0.4×5÷0.4×5
21÷0.25÷0.4 0.125×32×0.25 82.2×9.9.
递等式计算:(能简算的用简便方法计算)
(1)(5.81﹣2.09)×3.5
(2)2.5×8×0.5+40
(3)3.865+1.92+3.135+2.08
(4)5.8×6.1+3.2×6.1+6.1
(5)16÷0.25÷0.4
(6)(750﹣366)÷48×[25÷(210﹣209)].
下面各题能简便的要简便.
15﹣8.13﹣1.87 5.14+3.225﹣6.302 3.95+5.36﹣1.95
13.67﹣(5.45+3.67) 4.26+5.48﹣1.26+4.52 14.67+25.91+15.33+4.09.
能简便的要简便计算
2.9×1.4+2×0.16 200﹣(3.05+7.1)×18 2.5×32×1.25
(2.44﹣1.8)÷0.4×20 48×10.1 3.2×19+3.2.
怎样简便怎样算.
(1)0.625×(8.3﹣2.5×0.12) (2)3÷﹣÷3 (3)3098+3098×99
(4)6.3×8.7+8.7×3.7 (5)2.5×1.25×32 (6)﹣﹣.
计算.(怎样简便怎样算).
5.64﹣2.4÷0.48 12.8+10.8÷45 13.2÷8÷1.25
(70.8﹣67.55)÷0.25 1.63+4.19+2.37 2.16×5.6+4.4×2.16.
37.2×99+37.2= 25×4÷0.25×4= 0.9×7+10.7=
9÷5﹣1.9÷5﹦ 6.8﹣2.4÷3= 0.6÷0.3+0.5=
1.9+5.1÷51= 12﹣0.05×4= 1.8÷0.9×0.5=
1×0.01÷0.1= 7.2﹣1.2+6.7=
用递等式计算.(能简算的要写出简算过程)
(1)1.25×3.2×0.25 (2)6.4×0.27+3.6×0.27
(3)3.84﹣0.84×5÷1.5 (4)2.5×0.99
(5)8.19+0.5×(4.36﹣2.74) (6)1.8×2.48+1.52×1.8﹣0.5
(7)[(6﹣4.2)×2.5]÷2.5×1 (8)4.02÷[(1﹣0.4)÷0.1].
口算我最行.
0.25×2= 89.3×0.6= 5÷0.25= 6.5×6.7+3.5×6.7=
9.6÷32= 65÷1.3= 0.28÷4= 50×7.89×0.2=
1÷4= 28÷0.02= 28÷0.5= 0.4×3.2×2.5=
用自己喜欢的方法计算下面各题.
1.28+0.86+38.72 0.45÷0.6÷0.5 32×0.25×1.25
0.78÷0.13×0.2 13.6×9+40.6÷2 1.08×0.8÷0.27.
直接写得数:
1.25×8= 5×2.4= 0.36÷3.6= 5.6+4.04= 4.6×0.1=
72.5÷0.01= 0.8×0.05= 6.04﹣0.4=1÷4= 48.9﹣(8.9+4.96)= 27.5×11÷27.5×4=