直接写得数.
1﹣+
= 1÷
×
= 0.5﹣
+0.5﹣
= 8.1+
= (
+
)×24=
7÷×7÷
= 9﹣0.9= 72÷0.4= 1.25×8= 0×24+5=
计算.
8.8﹣﹣(0.8+
)
×〔1﹣(
﹣
)〕
×7.8﹣0.75×2.8﹣75%
111×28+999×8×8.9+
×10%2
+1
+2.25+3
.
脱式计算.
0.25×1.25×4×82.125×+1.875÷4(2.5﹣0.125)×0.8+6.24
2÷﹣
÷22.25×4.8+77.5×0.4836×(
+
)
怎样算简便就怎样算.
12.7×99+12.7 25×32×0.125(7.6×15+2.4×5)÷126 16.8﹣2.25﹣4.63.
用简便方法计算.
25×(100+4)×20﹣
×3﹣
2008×
.
怎样算简便就怎样算.
3280÷16+60018.75﹣6.2﹣3.8 3.75+4.5÷0.18×0.2525×1.25×32.