(1)1417×73+217×14×6(2)12÷34-34×112(3)47145÷46.-数学

题目简介

(1)1417×73+217×14×6(2)12÷34-34×112(3)47145÷46.-数学

题目详情

(1)
14
17
×73+
2
17
×14×6(2)12÷
3
4
-
3
4
×
1
12
(3)47
1
45
÷46.
题型:解答题难度:中档来源:不详

答案

(1)class="stub"14
17
×73+class="stub"2
17
×14×6,
=class="stub"14
17
×73+class="stub"2
17
×7×2×6,
=class="stub"14
17
×73+class="stub"14
17
×12,
=class="stub"14
17
×(73+12),
=class="stub"14
17
×85,
=70;

(2)12÷class="stub"3
4
-class="stub"3
4
×class="stub"1
12

=16-class="stub"1
16

=15class="stub"15
16


(3)47class="stub"1
45
÷46,
=(46+class="stub"46
45
)×class="stub"1
46

=46×class="stub"1
46
+class="stub"46
45
×class="stub"1
46

=1+class="stub"1
45

=1class="stub"1
45

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