3 运动定律与简便运算
(1)+3.52+
+48% (2)
×
+
(3)
÷(5﹣3.9×
)
(4)25﹣25× (5)1000÷32÷0.25÷0.125 (6)38
﹣15.38+61.25﹣4.62.
脱式计算:
0.75÷0.25+×
(8.6×0.5﹣
)÷12
÷[
﹣(
+
)]
[800×(1+25%)﹣360×1.5]÷25% 15﹣[+(2.5﹣
)]÷0.125.
(1)17690÷58×89﹣6759 (2)7.35+2.65×(3.9﹣7.632÷2.4)
(3)36﹣8.325+21
﹣1
(4)27
×60+9
×96.
用你喜欢的方法计算.
0.125×32×2.5 6.7×0.9+3.3×0.9 (﹣
+
)÷
18.7×98+18.7+18.7 0.65×14+87×65%﹣.
计算下面各题,能简便的要简便计算.
4.5+7.8×2.5÷1.3 75×60%+4×+0.6 3×(
+
)﹣
3.4×99+3.4
12.5×3.2×2.5 12×(+
﹣
)
﹣
x=
x:
=36:18.
直接写得数﹣
= 27×
= (
+
)×12=
×3÷
×3= 1.25×4×8=
420﹣98= 0.4×0.5= 0.23= 0.1+99×0.1= 0.36÷0.06=
用递等式计算(能简算的要简算)
798+10570÷35 ×2.5×
×4 187×99
2.5÷[(17.2﹣4.5×3.6)÷0.04] 24×(﹣
+
) 4.63×75%+6.47×
﹣0.75.