能简算的要简便算.215×21×51415×(23+35)97×596(13+14+124)×2435×23+25÷112[1-(14+38)]÷14.-数学

题目简介

能简算的要简便算.215×21×51415×(23+35)97×596(13+14+124)×2435×23+25÷112[1-(14+38)]÷14.-数学

题目详情

能简算的要简便算.
2
15
×21×
5
14
15×(
2
3
+
3
5
97×
5
96
1
3
+
1
4
+
1
24
)×24
3
5
×
2
3
+
2
5
÷1
1
2
[1-(
1
4
+
3
8
)]÷
1
4
题型:解答题难度:中档来源:不详

答案

(1)class="stub"2
15
×21×class="stub"5
14

=class="stub"42
15
×class="stub"5
14

=1;

(2)15×(class="stub"2
3
+class="stub"3
5
),
=15×class="stub"2
3
+class="stub"3
5
×15,
=10+9,
=19;

(3)97×class="stub"5
96

=(96+1)×class="stub"5
96

=96×class="stub"5
96
+1×class="stub"5
96

=5class="stub"5
96


(4)(class="stub"1
3
+class="stub"1
4
+class="stub"1
24
)×24,
=24×class="stub"1
3
+24×class="stub"1
4
+class="stub"1
24
×24,
=8+6+1,
=15;

(5)class="stub"3
5
×class="stub"2
3
+class="stub"2
5
÷1class="stub"1
2

=class="stub"2
5
+class="stub"2
5
×class="stub"2
3

=class="stub"2
5
+class="stub"4
15

=class="stub"6
15
+class="stub"4
15

=class="stub"2
3


(6)[1-(class="stub"1
4
+class="stub"3
8
)]÷class="stub"1
4

=[1-class="stub"5
8
]×4,
=class="stub"3
8
×
4,
=1.5;

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