口算.
10﹣4.2= 7.1﹣3.9= 4.3﹣4= 3.8+1.4=
5.7+1.8= 2.7﹣1.7= 0.5+8.5= 3.6﹣0.9=
列竖式计算.
(1)52.86+178.3=
(2)0.085+9.39=
(3)62.35+9.79+12.1=
(4)69.96﹣25.78﹣13.05=
计算题.(能简便的要简便)
①432×109﹣9×432 |
②99×172 |
③9×72×125 |
④463﹣187+137﹣113 |
⑤9.73+0.483+4.83+12.4 |
⑥8.32+5.763﹣2.808﹣1.78 |
⑦384×[150÷(50﹣25)] |
⑧﹣(用小数计算) |
很快算出得数。
⑴5+0.4= |
⑵1.4+2.7= |
⑶8.2+3.7= |
⑷5+2.4= |
⑸1.8﹣2.7= |
⑹7.3+0.9= |
⑺2+5.3= |
⑻2.0+1.8= |
⑼5.7+2.8= |
⑽6+2.2= |
⑾1.5+8.5= |
⑿7.4+1.6= |
⒀5﹣6.5= |
⒁3.2﹣2.3= |
⒂4.2﹣2.2= |
⒃2﹣2.3= |
试题篮
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