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计算下面各题,能简便的要简便.712−524+23715+78+415+1856−57+16−170.64+35+1.36+0.48−916−7161720−34+25.
题目详情
计算下面各题,能简便的要简便.
−
+
+
+
+
−
+
−
0.64+
+1.36+0.48−
−
−
+
.
−
+
+
+
+
−
+
−
0.64+
+1.36+0.48−
−
−
+
.
7 7 12 12
5 5 24 24
2 2 3 3
+
+
+
−
+
−
0.64+
+1.36+0.48−
−
−
+
.
7 7 15 15
7 7 8 8
4 4 15 15
1 1 8 8
−
+
−
0.64+
+1.36+0.48−
−
−
+
.
5 5 6 6
5 5 7 7
1 1 6 6
1 1 7 7
0.64+
+1.36+0.48−
−
−
+
.
3 3 5 5 8−
−
−
+
.
9 9 16 16
7 7 16 16
−
+
.
17 17 20 20
3 3 4 4
2 2 5 5
7 |
12 |
5 |
24 |
2 |
3 |
7 |
15 |
7 |
8 |
4 |
15 |
1 |
8 |
5 |
6 |
5 |
7 |
1 |
6 |
1 |
7 |
0.64+
3 |
5 |
9 |
16 |
7 |
16 |
17 |
20 |
3 |
4 |
2 |
5 |
7 |
12 |
5 |
24 |
2 |
3 |
7 |
15 |
7 |
8 |
4 |
15 |
1 |
8 |
5 |
6 |
5 |
7 |
1 |
6 |
1 |
7 |
0.64+
3 |
5 |
9 |
16 |
7 |
16 |
17 |
20 |
3 |
4 |
2 |
5 |
7 |
12 |
5 |
24 |
2 |
3 |
7 |
15 |
7 |
8 |
4 |
15 |
1 |
8 |
5 |
6 |
5 |
7 |
1 |
6 |
1 |
7 |
0.64+
3 |
5 |
9 |
16 |
7 |
16 |
17 |
20 |
3 |
4 |
2 |
5 |
7 |
15 |
7 |
8 |
4 |
15 |
1 |
8 |
5 |
6 |
5 |
7 |
1 |
6 |
1 |
7 |
0.64+
3 |
5 |
9 |
16 |
7 |
16 |
17 |
20 |
3 |
4 |
2 |
5 |
5 |
6 |
5 |
7 |
1 |
6 |
1 |
7 |
0.64+
3 |
5 |
9 |
16 |
7 |
16 |
17 |
20 |
3 |
4 |
2 |
5 |
3 |
5 |
9 |
16 |
7 |
16 |
17 |
20 |
3 |
4 |
2 |
5 |
9 |
16 |
7 |
16 |
17 |
20 |
3 |
4 |
2 |
5 |
17 |
20 |
3 |
4 |
2 |
5 |
▼优质解答
答案和解析
(1)
−
+
,
=
+
,
=
;
(2)
+
+
+
,
=(
+
)+(
+
),
=1+1,
=2;
(3)
−
+
−
,
=(
+
)-(
+
),
=1-
,
=
;
(4)0.64+
+1.36+0.48−
−
,
=(0.64+1.36)+(0.6+0.48)-(
+
),
=2+1.08-1,
=2.08;
(5)
−
+
,
=
+
,
=
7 7 712 12 12−
5 5 524 24 24+
2 2 23 3 3,
=
+
,
=
;
(2)
+
+
+
,
=(
+
)+(
+
),
=1+1,
=2;
(3)
−
+
−
,
=(
+
)-(
+
),
=1-
,
=
;
(4)0.64+
+1.36+0.48−
−
,
=(0.64+1.36)+(0.6+0.48)-(
+
),
=2+1.08-1,
=2.08;
(5)
−
+
,
=
+
,
=
9 9 924 24 24+
,
=
;
(2)
+
+
+
,
=(
+
)+(
+
),
=1+1,
=2;
(3)
−
+
−
,
=(
+
)-(
+
),
=1-
,
=
;
(4)0.64+
+1.36+0.48−
−
,
=(0.64+1.36)+(0.6+0.48)-(
+
),
=2+1.08-1,
=2.08;
(5)
−
+
,
=
+
,
=
2 2 23 3 3,
=
;
(2)
+
+
+
,
=(
+
)+(
+
),
=1+1,
=2;
(3)
−
+
−
,
=(
+
)-(
+
),
=1-
,
=
;
(4)0.64+
+1.36+0.48−
−
,
=(0.64+1.36)+(0.6+0.48)-(
+
),
=2+1.08-1,
=2.08;
(5)
−
+
,
=
+
,
=
25 25 2524 24 24;
(2)
+
+
+
,
=(
+
)+(
+
),
=1+1,
=2;
(3)
−
+
−
,
=(
+
)-(
+
),
=1-
,
=
;
(4)0.64+
+1.36+0.48−
−
,
=(0.64+1.36)+(0.6+0.48)-(
+
),
=2+1.08-1,
=2.08;
(5)
−
+
,
=
+
,
=
7 7 715 15 15+
7 7 78 8 8+
4 4 415 15 15+
1 1 18 8 8,
=(
+
)+(
+
),
=1+1,
=2;
(3)
−
+
−
,
=(
+
)-(
+
),
=1-
,
=
;
(4)0.64+
+1.36+0.48−
−
,
=(0.64+1.36)+(0.6+0.48)-(
+
),
=2+1.08-1,
=2.08;
(5)
−
+
,
=
+
,
=
7 7 715 15 15+
)+(
+
),
=1+1,
=2;
(3)
−
+
−
,
=(
+
)-(
+
),
=1-
,
=
;
(4)0.64+
+1.36+0.48−
−
,
=(0.64+1.36)+(0.6+0.48)-(
+
),
=2+1.08-1,
=2.08;
(5)
−
+
,
=
+
,
=
4 4 415 15 15)+(
+
),
=1+1,
=2;
(3)
−
+
−
,
=(
+
)-(
+
),
=1-
,
=
;
(4)0.64+
+1.36+0.48−
−
,
=(0.64+1.36)+(0.6+0.48)-(
+
),
=2+1.08-1,
=2.08;
(5)
−
+
,
=
+
,
=
7 7 78 8 8+
),
=1+1,
=2;
(3)
−
+
−
,
=(
+
)-(
+
),
=1-
,
=
;
(4)0.64+
+1.36+0.48−
−
,
=(0.64+1.36)+(0.6+0.48)-(
+
),
=2+1.08-1,
=2.08;
(5)
−
+
,
=
+
,
=
1 1 18 8 8),
=1+1,
=2;
(3)
−
+
−
,
=(
+
)-(
+
),
=1-
,
=
;
(4)0.64+
+1.36+0.48−
−
,
=(0.64+1.36)+(0.6+0.48)-(
+
),
=2+1.08-1,
=2.08;
(5)
−
+
,
=
+
,
=
5 5 56 6 6−
5 5 57 7 7+
1 1 16 6 6−
1 1 17 7 7,
=(
+
)-(
+
),
=1-
,
=
;
(4)0.64+
+1.36+0.48−
−
,
=(0.64+1.36)+(0.6+0.48)-(
+
),
=2+1.08-1,
=2.08;
(5)
−
+
,
=
+
,
=
5 5 56 6 6+
)-(
+
),
=1-
,
=
;
(4)0.64+
+1.36+0.48−
−
,
=(0.64+1.36)+(0.6+0.48)-(
+
),
=2+1.08-1,
=2.08;
(5)
−
+
,
=
+
,
=
1 1 16 6 6)-(
+
),
=1-
,
=
;
(4)0.64+
+1.36+0.48−
−
,
=(0.64+1.36)+(0.6+0.48)-(
+
),
=2+1.08-1,
=2.08;
(5)
−
+
,
=
+
,
=
5 5 57 7 7+
),
=1-
,
=
;
(4)0.64+
+1.36+0.48−
−
,
=(0.64+1.36)+(0.6+0.48)-(
+
),
=2+1.08-1,
=2.08;
(5)
−
+
,
=
+
,
=
1 1 17 7 7),
=1-
,
=
;
(4)0.64+
+1.36+0.48−
−
,
=(0.64+1.36)+(0.6+0.48)-(
+
),
=2+1.08-1,
=2.08;
(5)
−
+
,
=
+
,
=
6 6 67 7 7,
=
;
(4)0.64+
+1.36+0.48−
−
,
=(0.64+1.36)+(0.6+0.48)-(
+
),
=2+1.08-1,
=2.08;
(5)
−
+
,
=
+
,
=
1 1 17 7 7;
(4)0.64+
+1.36+0.48−
−
,
=(0.64+1.36)+(0.6+0.48)-(
+
),
=2+1.08-1,
=2.08;
(5)
−
+
,
=
+
,
=
0.64+
3 3 35 5 5+1.36+0.48−
−
,
=(0.64+1.36)+(0.6+0.48)-(
+
),
=2+1.08-1,
=2.08;
(5)
−
+
,
=
+
,
=
8−
9 9 916 16 16−
7 7 716 16 16,
=(0.64+1.36)+(0.6+0.48)-(
+
),
=2+1.08-1,
=2.08;
(5)
−
+
,
=
+
,
=
9 9 916 16 16+
),
=2+1.08-1,
=2.08;
(5)
−
+
,
=
+
,
=
7 7 716 16 16),
=2+1.08-1,
=2.08;
(5)
−
+
,
=
+
,
=
17 17 1720 20 20−
3 3 34 4 4+
2 2 25 5 5,
=
+
,
=
2 2 220 20 20+
,
=
2 2 25 5 5,
=
问题解析 问题解析
(1)按照从左到右的顺序计算;
(2)运用加法结合律简算;
(3)运用加法结合律,以及连续减去两个数,等于减去这两个数的和简算;
(4)运用加法结合律,以及连续减去两个数,等于减去这两个数的和简算;
(5)按照从左到右的顺序计算. (1)按照从左到右的顺序计算;
(2)运用加法结合律简算;
(3)运用加法结合律,以及连续减去两个数,等于减去这两个数的和简算;
(4)运用加法结合律,以及连续减去两个数,等于减去这两个数的和简算;
(5)按照从左到右的顺序计算.名师点评 名师点评
本题考点: 本题考点:
分数的加法和减法;运算定律与简便运算. 分数的加法和减法;运算定律与简便运算.
考点点评: 考点点评:
此题主要考查分数加减法混合运算的运算顺序和应用运算定律进行简便计算. 此题主要考查分数加减法混合运算的运算顺序和应用运算定律进行简便计算.
var userCity = "\u4e50\u5c71",
userProvince = "\u56db\u5ddd",
zuowenSmall = "1";
7 |
12 |
5 |
24 |
2 |
3 |
=
9 |
24 |
2 |
3 |
=
25 |
24 |
(2)
7 |
15 |
7 |
8 |
4 |
15 |
1 |
8 |
=(
7 |
15 |
4 |
15 |
7 |
8 |
1 |
8 |
=1+1,
=2;
(3)
5 |
6 |
5 |
7 |
1 |
6 |
1 |
7 |
=(
5 |
6 |
1 |
6 |
5 |
7 |
1 |
7 |
=1-
6 |
7 |
=
1 |
7 |
(4)0.64+
3 |
5 |
9 |
16 |
7 |
16 |
=(0.64+1.36)+(0.6+0.48)-(
9 |
16 |
7 |
16 |
=2+1.08-1,
=2.08;
(5)
17 |
20 |
3 |
4 |
2 |
5 |
=
2 |
20 |
2 |
5 |
=
7 |
12 |
5 |
24 |
2 |
3 |
=
9 |
24 |
2 |
3 |
=
25 |
24 |
(2)
7 |
15 |
7 |
8 |
4 |
15 |
1 |
8 |
=(
7 |
15 |
4 |
15 |
7 |
8 |
1 |
8 |
=1+1,
=2;
(3)
5 |
6 |
5 |
7 |
1 |
6 |
1 |
7 |
=(
5 |
6 |
1 |
6 |
5 |
7 |
1 |
7 |
=1-
6 |
7 |
=
1 |
7 |
(4)0.64+
3 |
5 |
9 |
16 |
7 |
16 |
=(0.64+1.36)+(0.6+0.48)-(
9 |
16 |
7 |
16 |
=2+1.08-1,
=2.08;
(5)
17 |
20 |
3 |
4 |
2 |
5 |
=
2 |
20 |
2 |
5 |
=
9 |
24 |
2 |
3 |
=
25 |
24 |
(2)
7 |
15 |
7 |
8 |
4 |
15 |
1 |
8 |
=(
7 |
15 |
4 |
15 |
7 |
8 |
1 |
8 |
=1+1,
=2;
(3)
5 |
6 |
5 |
7 |
1 |
6 |
1 |
7 |
=(
5 |
6 |
1 |
6 |
5 |
7 |
1 |
7 |
=1-
6 |
7 |
=
1 |
7 |
(4)0.64+
3 |
5 |
9 |
16 |
7 |
16 |
=(0.64+1.36)+(0.6+0.48)-(
9 |
16 |
7 |
16 |
=2+1.08-1,
=2.08;
(5)
17 |
20 |
3 |
4 |
2 |
5 |
=
2 |
20 |
2 |
5 |
=
2 |
3 |
=
25 |
24 |
(2)
7 |
15 |
7 |
8 |
4 |
15 |
1 |
8 |
=(
7 |
15 |
4 |
15 |
7 |
8 |
1 |
8 |
=1+1,
=2;
(3)
5 |
6 |
5 |
7 |
1 |
6 |
1 |
7 |
=(
5 |
6 |
1 |
6 |
5 |
7 |
1 |
7 |
=1-
6 |
7 |
=
1 |
7 |
(4)0.64+
3 |
5 |
9 |
16 |
7 |
16 |
=(0.64+1.36)+(0.6+0.48)-(
9 |
16 |
7 |
16 |
=2+1.08-1,
=2.08;
(5)
17 |
20 |
3 |
4 |
2 |
5 |
=
2 |
20 |
2 |
5 |
=
25 |
24 |
(2)
7 |
15 |
7 |
8 |
4 |
15 |
1 |
8 |
=(
7 |
15 |
4 |
15 |
7 |
8 |
1 |
8 |
=1+1,
=2;
(3)
5 |
6 |
5 |
7 |
1 |
6 |
1 |
7 |
=(
5 |
6 |
1 |
6 |
5 |
7 |
1 |
7 |
=1-
6 |
7 |
=
1 |
7 |
(4)0.64+
3 |
5 |
9 |
16 |
7 |
16 |
=(0.64+1.36)+(0.6+0.48)-(
9 |
16 |
7 |
16 |
=2+1.08-1,
=2.08;
(5)
17 |
20 |
3 |
4 |
2 |
5 |
=
2 |
20 |
2 |
5 |
=
7 |
15 |
7 |
8 |
4 |
15 |
1 |
8 |
=(
7 |
15 |
4 |
15 |
7 |
8 |
1 |
8 |
=1+1,
=2;
(3)
5 |
6 |
5 |
7 |
1 |
6 |
1 |
7 |
=(
5 |
6 |
1 |
6 |
5 |
7 |
1 |
7 |
=1-
6 |
7 |
=
1 |
7 |
(4)0.64+
3 |
5 |
9 |
16 |
7 |
16 |
=(0.64+1.36)+(0.6+0.48)-(
9 |
16 |
7 |
16 |
=2+1.08-1,
=2.08;
(5)
17 |
20 |
3 |
4 |
2 |
5 |
=
2 |
20 |
2 |
5 |
=
7 |
15 |
4 |
15 |
7 |
8 |
1 |
8 |
=1+1,
=2;
(3)
5 |
6 |
5 |
7 |
1 |
6 |
1 |
7 |
=(
5 |
6 |
1 |
6 |
5 |
7 |
1 |
7 |
=1-
6 |
7 |
=
1 |
7 |
(4)0.64+
3 |
5 |
9 |
16 |
7 |
16 |
=(0.64+1.36)+(0.6+0.48)-(
9 |
16 |
7 |
16 |
=2+1.08-1,
=2.08;
(5)
17 |
20 |
3 |
4 |
2 |
5 |
=
2 |
20 |
2 |
5 |
=
4 |
15 |
7 |
8 |
1 |
8 |
=1+1,
=2;
(3)
5 |
6 |
5 |
7 |
1 |
6 |
1 |
7 |
=(
5 |
6 |
1 |
6 |
5 |
7 |
1 |
7 |
=1-
6 |
7 |
=
1 |
7 |
(4)0.64+
3 |
5 |
9 |
16 |
7 |
16 |
=(0.64+1.36)+(0.6+0.48)-(
9 |
16 |
7 |
16 |
=2+1.08-1,
=2.08;
(5)
17 |
20 |
3 |
4 |
2 |
5 |
=
2 |
20 |
2 |
5 |
=
7 |
8 |
1 |
8 |
=1+1,
=2;
(3)
5 |
6 |
5 |
7 |
1 |
6 |
1 |
7 |
=(
5 |
6 |
1 |
6 |
5 |
7 |
1 |
7 |
=1-
6 |
7 |
=
1 |
7 |
(4)0.64+
3 |
5 |
9 |
16 |
7 |
16 |
=(0.64+1.36)+(0.6+0.48)-(
9 |
16 |
7 |
16 |
=2+1.08-1,
=2.08;
(5)
17 |
20 |
3 |
4 |
2 |
5 |
=
2 |
20 |
2 |
5 |
=
1 |
8 |
=1+1,
=2;
(3)
5 |
6 |
5 |
7 |
1 |
6 |
1 |
7 |
=(
5 |
6 |
1 |
6 |
5 |
7 |
1 |
7 |
=1-
6 |
7 |
=
1 |
7 |
(4)0.64+
3 |
5 |
9 |
16 |
7 |
16 |
=(0.64+1.36)+(0.6+0.48)-(
9 |
16 |
7 |
16 |
=2+1.08-1,
=2.08;
(5)
17 |
20 |
3 |
4 |
2 |
5 |
=
2 |
20 |
2 |
5 |
=
5 |
6 |
5 |
7 |
1 |
6 |
1 |
7 |
=(
5 |
6 |
1 |
6 |
5 |
7 |
1 |
7 |
=1-
6 |
7 |
=
1 |
7 |
(4)0.64+
3 |
5 |
9 |
16 |
7 |
16 |
=(0.64+1.36)+(0.6+0.48)-(
9 |
16 |
7 |
16 |
=2+1.08-1,
=2.08;
(5)
17 |
20 |
3 |
4 |
2 |
5 |
=
2 |
20 |
2 |
5 |
=
5 |
6 |
1 |
6 |
5 |
7 |
1 |
7 |
=1-
6 |
7 |
=
1 |
7 |
(4)0.64+
3 |
5 |
9 |
16 |
7 |
16 |
=(0.64+1.36)+(0.6+0.48)-(
9 |
16 |
7 |
16 |
=2+1.08-1,
=2.08;
(5)
17 |
20 |
3 |
4 |
2 |
5 |
=
2 |
20 |
2 |
5 |
=
1 |
6 |
5 |
7 |
1 |
7 |
=1-
6 |
7 |
=
1 |
7 |
(4)0.64+
3 |
5 |
9 |
16 |
7 |
16 |
=(0.64+1.36)+(0.6+0.48)-(
9 |
16 |
7 |
16 |
=2+1.08-1,
=2.08;
(5)
17 |
20 |
3 |
4 |
2 |
5 |
=
2 |
20 |
2 |
5 |
=
5 |
7 |
1 |
7 |
=1-
6 |
7 |
=
1 |
7 |
(4)0.64+
3 |
5 |
9 |
16 |
7 |
16 |
=(0.64+1.36)+(0.6+0.48)-(
9 |
16 |
7 |
16 |
=2+1.08-1,
=2.08;
(5)
17 |
20 |
3 |
4 |
2 |
5 |
=
2 |
20 |
2 |
5 |
=
1 |
7 |
=1-
6 |
7 |
=
1 |
7 |
(4)0.64+
3 |
5 |
9 |
16 |
7 |
16 |
=(0.64+1.36)+(0.6+0.48)-(
9 |
16 |
7 |
16 |
=2+1.08-1,
=2.08;
(5)
17 |
20 |
3 |
4 |
2 |
5 |
=
2 |
20 |
2 |
5 |
=
6 |
7 |
=
1 |
7 |
(4)0.64+
3 |
5 |
9 |
16 |
7 |
16 |
=(0.64+1.36)+(0.6+0.48)-(
9 |
16 |
7 |
16 |
=2+1.08-1,
=2.08;
(5)
17 |
20 |
3 |
4 |
2 |
5 |
=
2 |
20 |
2 |
5 |
=
1 |
7 |
(4)0.64+
3 |
5 |
9 |
16 |
7 |
16 |
=(0.64+1.36)+(0.6+0.48)-(
9 |
16 |
7 |
16 |
=2+1.08-1,
=2.08;
(5)
17 |
20 |
3 |
4 |
2 |
5 |
=
2 |
20 |
2 |
5 |
=
3 |
5 |
9 |
16 |
7 |
16 |
=(0.64+1.36)+(0.6+0.48)-(
9 |
16 |
7 |
16 |
=2+1.08-1,
=2.08;
(5)
17 |
20 |
3 |
4 |
2 |
5 |
=
2 |
20 |
2 |
5 |
=
9 |
16 |
7 |
16 |
=(0.64+1.36)+(0.6+0.48)-(
9 |
16 |
7 |
16 |
=2+1.08-1,
=2.08;
(5)
17 |
20 |
3 |
4 |
2 |
5 |
=
2 |
20 |
2 |
5 |
=
9 |
16 |
7 |
16 |
=2+1.08-1,
=2.08;
(5)
17 |
20 |
3 |
4 |
2 |
5 |
=
2 |
20 |
2 |
5 |
=
7 |
16 |
=2+1.08-1,
=2.08;
(5)
17 |
20 |
3 |
4 |
2 |
5 |
=
2 |
20 |
2 |
5 |
=
17 |
20 |
3 |
4 |
2 |
5 |
=
2 |
20 |
2 |
5 |
=
2 |
20 |
2 |
5 |
=
2 |
5 |
=
作业帮用户
2017-10-10
举报
作业帮用户作业帮用户
2017-10-102017-10-10
举报
举报
- 问题解析
- (1)按照从左到右的顺序计算;
(2)运用加法结合律简算;
(3)运用加法结合律,以及连续减去两个数,等于减去这两个数的和简算;
(4)运用加法结合律,以及连续减去两个数,等于减去这两个数的和简算;
(5)按照从左到右的顺序计算.
(2)运用加法结合律简算;
(3)运用加法结合律,以及连续减去两个数,等于减去这两个数的和简算;
(4)运用加法结合律,以及连续减去两个数,等于减去这两个数的和简算;
(5)按照从左到右的顺序计算.
(2)运用加法结合律简算;
(3)运用加法结合律,以及连续减去两个数,等于减去这两个数的和简算;
(4)运用加法结合律,以及连续减去两个数,等于减去这两个数的和简算;
(5)按照从左到右的顺序计算.
- 名师点评
-
- 本题考点:
- 分数的加法和减法;运算定律与简便运算.
-
- 考点点评:
- 此题主要考查分数加减法混合运算的运算顺序和应用运算定律进行简便计算.
- 本题考点:
- 分数的加法和减法;运算定律与简便运算.
- 本题考点:
- 分数的加法和减法;运算定律与简便运算.
- 考点点评:
- 此题主要考查分数加减法混合运算的运算顺序和应用运算定律进行简便计算.
- 考点点评:
- 此题主要考查分数加减法混合运算的运算顺序和应用运算定律进行简便计算.
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