6.3×8.7+8.7×3.7(13-16+14)×1274×58+14÷850.625×(8.3-2.5×0.12)3÷37-37÷3920÷[12×(23+45)].-六年级数学

题目简介

6.3×8.7+8.7×3.7(13-16+14)×1274×58+14÷850.625×(8.3-2.5×0.12)3÷37-37÷3920÷[12×(23+45)].-六年级数学

题目详情

6.3×8.7+8.7×3.7
1
3
-
1
6
+
1
4
)×12
7
4
×
5
8
+
1
4
÷
8
5
0.625×(8.3-2.5×0.12)
3
7
-
3
7
÷3
9
20
÷[
1
2
×(
2
3
+
4
5
)].
题型:解答题难度:中档来源:不详

答案

(1)6.3×8.7+8.7×3.7,
=(6.3+3.7)×8.7,
=10×8.7,
=87;

(2)(class="stub"1
3
-class="stub"1
6
+class="stub"1
4
)×12,
=class="stub"1
3
×12-class="stub"1
6
×12+class="stub"1
4
×12,
=4-2+3,
=5;

(3)class="stub"7
4
×class="stub"5
8
+class="stub"1
4
÷class="stub"8
5

=class="stub"7
4
×class="stub"5
8
+class="stub"1
4
×class="stub"5
8

=(class="stub"7
4
+class="stub"1
4
)×class="stub"5
8

=2×class="stub"5
8

=class="stub"5
4


(4)0.625×(8.3-2.5×0.12),
=0.625×(8.3-0.3),
=0.625×8,
=5;

(5)3÷class="stub"3
7
-class="stub"3
7
÷3,
=7-class="stub"1
7

=6class="stub"6
7


(6)class="stub"9
20
÷[class="stub"1
2
×(class="stub"2
3
+class="stub"4
5
)],
=class="stub"9
20
÷[class="stub"1
2
×class="stub"22
15
],
=class="stub"9
20
÷class="stub"11
15

=class="stub"27
44

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