5﹣2+
= (12.5+
)×8= 19﹣3
﹣4
= 8+0.1÷0.1﹣8=
21﹣2.897= 0.25×0.12= 3.6÷25%×4= =
口算
0.6+0.15= 4×50%= 5﹣0.25+0.75= 2.5×4÷2.5×4=
0.5÷=
÷1= 5.47﹣1.8﹣3.2=(
+
)×63=
口算.
(1)7.2+2.08=
(2)+
=
(3)÷
=
(4)0÷0.99=
(5)32×0.125=
(6)0.75×3÷=
(7)+3.2÷16×4=
(8)﹣
×
=
(9)0.8÷0.01=
(10)10×﹣1÷3=
(11)8.4÷0.7=
(12)×5÷
×5
(13)0.23=
直接写出得数.﹣0.01= 1.53+47=
+
=
÷9=
×
=
+0.75=
÷
= 1﹣25%=
0.6÷= 125×8=
×1.8= 0.8÷1.6=
(﹣
)×12= 402﹣62﹣38= 752﹣598= 99+999+2=
直接写出得数.
①14÷21= ②5﹣1.47﹣2.53= ③÷8=
④﹣
= ⑤
÷
﹣
= ⑥
×0.2=
直接写出得数.
1.87+5.3= 2.5×2.4=+
=
×
=
1= 7.2×
= 8
﹣3
= 15.16+9
=