题目内容
直接写得数.
| 320-190= | 20×15= | 840÷40= |
| ||||||||||||||
| (
| 0.4÷40%= |
|
320-190=130; 20×15=300; 840÷40=21;
-0.25=0.25;
÷100=0.008; (
+
)×63=23;0.4÷40%=1;
×
÷
×
=
;
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