早教吧作业答案频道 -->数学-->
计算,能简便的要用简便方法计算.(316+124)×8+2334.7-715+65.3-8151-(16+17)×224÷(13+34-16)0.25×32×12.5
题目详情
计算,能简便的要用简便方法计算.
(
+
)×8+
34.7-
+65.3-
1-(
+
)×2 24÷(
+
-
)
0.25×32×12.5 4.2×0.36+42×6.4%
(
3 |
16 |
1 |
24 |
2 |
3 |
7 |
15 |
8 |
15 |
1-(
1 |
6 |
1 |
7 |
1 |
3 |
3 |
4 |
1 |
6 |
0.25×32×12.5 4.2×0.36+42×6.4%
▼优质解答
答案和解析
(1)(
+
)×8+
=
×8+
×8+
=
+
+
=
+(
+
)
=
+1
=2
;
(2)34.7-
+65.3-
=(34.7+65.3)-(
+
)
=100-1
=99;
(3)1-(
+
)×2
=1-
×2
=1-
=
;
(4)24÷(
+
-
)
=24÷(
-
)
=24÷
=
;
(5)0.25×32×12.5
=0.25×(4×8)×12.5
=(0.25×4)×(8×12.5)
=1×100
=100;
(6)4.2×0.36+42×6.4%
=4.2×0.36+4.2×0.64
=4.2×(0.36+0.64)
=4.2×1
=4.2.
3 |
16 |
1 |
24 |
2 |
3 |
=
3 |
16 |
1 |
24 |
2 |
3 |
=
3 |
2 |
1 |
3 |
2 |
3 |
=
3 |
2 |
1 |
3 |
2 |
3 |
=
3 |
2 |
=2
1 |
2 |
(2)34.7-
7 |
15 |
8 |
15 |
=(34.7+65.3)-(
7 |
15 |
8 |
15 |
=100-1
=99;
(3)1-(
1 |
6 |
1 |
7 |
=1-
13 |
42 |
=1-
13 |
21 |
=
8 |
21 |
(4)24÷(
1 |
3 |
3 |
4 |
1 |
6 |
=24÷(
13 |
12 |
1 |
6 |
=24÷
11 |
12 |
=
288 |
11 |
(5)0.25×32×12.5
=0.25×(4×8)×12.5
=(0.25×4)×(8×12.5)
=1×100
=100;
(6)4.2×0.36+42×6.4%
=4.2×0.36+4.2×0.64
=4.2×(0.36+0.64)
=4.2×1
=4.2.
看了 计算,能简便的要用简便方法计...的网友还看了以下:
计算3乘16的3次方加15乘16的2次方加14乘16的1次方加10乘16的零次方结果是16362要 2020-05-14 …
求数学简算题(1) 3-4+5-6+7……2001-2002+2003-2004+2005 (2) 2020-05-15 …
16位二进制数表示非负整数的范围一般来说16位二进制数能表示非负整数的范围是A0---2的16次方 2020-07-09 …
2/8+3/8+7/16+15/32+……+511/1024怎么用裂项公式计算,计算中=(1/2- 2020-07-16 …
若4x^4-ax^3+bx^2-40x+16是完全平方式,ab值为多少?答案-180或820我算的 2020-07-17 …
这些题有简便算法吗?﹙5/18÷1/3+5/18﹚×0.25﹙6+3/5﹚×5/611/16+8/ 2020-07-19 …
50π/3化为2Rπ+a(0(16π+2π)/316π+2π/3? 2020-07-19 …
1;0.125X4分之1=?(5分之2+6分之1)X30=?2:在括号里填上合适的数.226+29 2020-07-19 …
计算下面题,要写出主要计算过程,能用简便方法的要用简便方法计算①2.4÷16×800②265.3÷ 2020-07-19 …
修一条光缆,甲队12人,乙队10人合作5天完工;如果甲队8人、乙队16人合作6天完工.甲队工作效率是 2020-11-27 …