计算下面各题,怎样简便就怎样算. 33.02-(148.4-90.85)÷2.5 423×0.6+0.6÷314 (1
计算下面各题,怎样简便就怎样算.33.02-(148.4-90.85)÷2.5423×0.6+0.6÷314(1÷27+27÷1)÷5.118.1+(315-0.299÷...
计算下面各题,怎样简便就怎样算. 33.02-(148.4-90.85)÷2.5 423×0.6+0.6÷314 (1÷27+27÷1)÷5.1 18.1+(315-0.299÷0.23)×112.
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(1)33.02-(148.4-90.85)÷2.5,
=33.02-57.55÷2.5,
=33.02-23.02,
=10;
(2)4
×0.6+0.6÷
,
=4
×0.6+0.6×
,
=(4
+
)×0.6,
=
×0.6,
=5.6;
(3)(1÷
+
÷1)÷5.1,
=(
+
)÷5.1,
=
÷5.1,
=
;
(4)218.1+(3
-0.299÷0.23)×1
,
=218.1+(3
-1.3)×1
,
=218.1+1.9×1
,
=218.1+2.85,
=220.95.
=33.02-57.55÷2.5,
=33.02-23.02,
=10;
(2)4
2 |
3 |
3 |
14 |
=4
2 |
3 |
14 |
3 |
=(4
2 |
3 |
14 |
3 |
=
28 |
3 |
=5.6;
(3)(1÷
2 |
7 |
2 |
7 |
=(
7 |
2 |
2 |
7 |
=
53 |
14 |
=
265 |
357 |
(4)218.1+(3
1 |
5 |
1 |
2 |
=218.1+(3
1 |
5 |
1 |
2 |
=218.1+1.9×1
1 |
2 |
=218.1+2.85,
=220.95.
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