题目内容
| 计算下列各题,能简算的要简算. 3618÷45+1620 |
| ||||||||||
| 10.2-(1.25+2.5)÷1.5 |
| ||||||||||
23-
| 1
|
(1)3618÷45+1620
=80.4+1620
=1700.4;
(2)
×20-
×3-
=
×(20-3-1)
=
×16
=6;
(3)10.2-(1.25+2.5)÷1.5
=10.2-3.75÷1.5
=10.2-2.5
=7.7;
(4)
×40-
÷
=(
-
)×40
=
×40
=5;
(5)23-
-
=23-(
+
)
=23-1
=22;
(6)1
÷(
+2.5×
)
=1
÷(
+2)
=1
÷2
=
.
=80.4+1620
=1700.4;
(2)
| 3 |
| 8 |
| 3 |
| 8 |
| 3 |
| 8 |
=
| 3 |
| 8 |
=
| 3 |
| 8 |
=6;
(3)10.2-(1.25+2.5)÷1.5
=10.2-3.75÷1.5
=10.2-2.5
=7.7;
(4)
| 11 |
| 16 |
| 9 |
| 16 |
| 1 |
| 40 |
=(
| 11 |
| 16 |
| 9 |
| 16 |
=
| 1 |
| 8 |
=5;
(5)23-
| 12 |
| 17 |
| 5 |
| 17 |
=23-(
| 12 |
| 17 |
| 5 |
| 17 |
=23-1
=22;
(6)1
| 1 |
| 8 |
| 1 |
| 4 |
| 4 |
| 5 |
=1
| 1 |
| 8 |
| 1 |
| 4 |
=1
| 1 |
| 8 |
| 1 |
| 4 |
=
| 1 |
| 2 |
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