口算
14×5= |
20×6= |
16×50= |
39﹣14= |
450÷3= |
250×3= |
200﹣90= |
60×130= |
130×5= |
2×380= |
150×6= |
43×70= |
140×7= |
280×3= |
350×2= |
250×3= |
340×6= |
3×250= |
850×2= |
5×270= |
口算
14×5= |
20×6= |
16×50= |
39﹣14= |
450÷3= |
250×3= |
200﹣90= |
60×130= |
130×5= |
2×380= |
150×6= |
43×70= |
140×7= |
280×3= |
350×2= |
250×3= |
340×6= |
3×250= |
850×2= |
5×270= |