题目内容
计算下面各题,能简算的要简算.
①0.45+0.45÷0.9×1.8
②9
-5
-2.25
③25×104
④0.625×4.3+
×4.7+62.5%
⑤(
+
)×10×6
⑥
×20-
×3-
.
①0.45+0.45÷0.9×1.8
②9
| 5 |
| 11 |
| 3 |
| 4 |
③25×104
④0.625×4.3+
| 5 |
| 8 |
⑤(
| 1 |
| 10 |
| 1 |
| 6 |
⑥
| 3 |
| 8 |
| 3 |
| 8 |
| 3 |
| 8 |
①0.45+0.45÷0.9×1.8,
=0.45+0.5×1.8,
=0.45+0.9,
=1.35;
②9
-5
-2.25,
=9
-(5.75+2.25),
=9
-8,
=1
;
③25×104,
=25×100+25×4,
=2500+100,
=2600;
④0.625×4.3+
×4.7+62.5%,
=0.625×(4.3+4.7+1),
=0.625×10,
=6.25;
⑤(
+
)×10×6,
=
×10×6+
×10×6,
=6+10,
=16;
⑥
×20-
×3-
,
=
×(20-3-1),
=
×16,
=6.
=0.45+0.5×1.8,
=0.45+0.9,
=1.35;
②9
| 5 |
| 11 |
| 3 |
| 4 |
=9
| 5 |
| 11 |
=9
| 5 |
| 11 |
=1
| 5 |
| 11 |
③25×104,
=25×100+25×4,
=2500+100,
=2600;
④0.625×4.3+
| 5 |
| 8 |
=0.625×(4.3+4.7+1),
=0.625×10,
=6.25;
⑤(
| 1 |
| 10 |
| 1 |
| 6 |
=
| 1 |
| 10 |
| 1 |
| 6 |
=6+10,
=16;
⑥
| 3 |
| 8 |
| 3 |
| 8 |
| 3 |
| 8 |
=
| 3 |
| 8 |
=
| 3 |
| 8 |
=6.
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