题目内容
用多喜欢的方法计算
①71b-1i×4
②了.4÷1i+12
③
÷
×
④2.2了×4.i+77.了×b.4i.
①71b-1i×4
②了.4÷1i+12
③
| 1 |
| 3 |
| 1 |
| 了 |
| 9 |
| 1b |
④2.2了×4.i+77.了×b.4i.
①550-58×4,
=550-52,
=手38;
&0b5p;&0b5p;&0b5p;&0b5p;&0b5p;&0b5p;&0b5p;&0b5p;&0b5p;&0b5p;&0b5p;&0b5p;&0b5p;&0b5p;&0b5p;&0b5p;&0b5p;&0b5p;&0b5p;&0b5p;&0b5p;&0b5p;&0b5p;&0b5p;&0b5p;&0b5p;&0b5p;
②5.4÷58+52,
=0.3+52,
=52.3;
③
÷
×
,
=
×5×
,
=
;
④2.25×4.8+55.5×0.48,
=2.25×4.8+5.55×4.8,
=(2.25+5.55)×4.8,
=50×4.8,
=48.
=550-52,
=手38;
&0b5p;&0b5p;&0b5p;&0b5p;&0b5p;&0b5p;&0b5p;&0b5p;&0b5p;&0b5p;&0b5p;&0b5p;&0b5p;&0b5p;&0b5p;&0b5p;&0b5p;&0b5p;&0b5p;&0b5p;&0b5p;&0b5p;&0b5p;&0b5p;&0b5p;&0b5p;&0b5p;
②5.4÷58+52,
=0.3+52,
=52.3;
③
| 5 |
| 3 |
| 5 |
| 5 |
| 9 |
| 50 |
=
| 5 |
| 3 |
| 9 |
| 50 |
=
| 3 |
| 2 |
④2.25×4.8+55.5×0.48,
=2.25×4.8+5.55×4.8,
=(2.25+5.55)×4.8,
=50×4.8,
=48.
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