题目内容
直接写出结果
0.125+
=
(
+
)×72=
7.95-0.73-0.27=
32+23=
7.3÷10%
14×
÷14×
=
.
0.125+
7 |
8 |
1
1
(
1 |
8 |
2 |
9 |
25
25
7.95-0.73-0.27=
6.95
6.95
32+23=
17
17
7.3÷10%
=73
=73
14×
5 |
7 |
5 |
7 |
25 |
49 |
25 |
49 |
分析:0.125+
先把小数化成分数再计算;
(
+
)×72运用乘法分配律简算;
7.95-0.73-0.27根据连续减去两个数等于减去这两个数的和简算;
32+23=3×3+2×2×2计算;
7.3÷10%先把百分数化成分数再计算;
14×
÷14×
=先把除法变成乘法,再运用乘法结合律简算.
7 |
8 |
(
1 |
8 |
2 |
9 |
7.95-0.73-0.27根据连续减去两个数等于减去这两个数的和简算;
32+23=3×3+2×2×2计算;
7.3÷10%先把百分数化成分数再计算;
14×
5 |
7 |
5 |
7 |
解答:解:(1)0.125+
,
=
+
,
=1;
(2)(
+
)×72,
=
×72+
×72,
=9+16,
=25;
(3)7.95-0.73-0.27,
=7.95-(0.73+0.27),
=7.95-1,
=6.95;
(4)32+23,
=(3×3)+(2×2×2),
=9+8,
=17;
(5)7.3÷10%,
=7.3×10,
=73;
(6)14×
÷14×
,
=14×
×
×
,
=(14×
)×(
×
),
=1×
,
=
.
7 |
8 |
=
1 |
8 |
7 |
8 |
=1;
(2)(
1 |
8 |
2 |
9 |
=
1 |
8 |
2 |
9 |
=9+16,
=25;
(3)7.95-0.73-0.27,
=7.95-(0.73+0.27),
=7.95-1,
=6.95;
(4)32+23,
=(3×3)+(2×2×2),
=9+8,
=17;
(5)7.3÷10%,
=7.3×10,
=73;
(6)14×
5 |
7 |
5 |
7 |
=14×
5 |
7 |
1 |
14 |
5 |
7 |
=(14×
1 |
14 |
5 |
7 |
5 |
7 |
=1×
25 |
49 |
=
25 |
49 |
点评:本题考查了基本的运算,要注意分析数据,选择合适的简算方法计算.
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