问题 解答题
脱式计算.(能简算的要简算)
29+12÷45+38813÷7+17×6132-613÷926-23125×(56+34)+45.
答案

(1)29+12÷45+38,

=29+

4
15
+38,

=29

4
15
+38,

=67

4
15

(2)813÷7+17×6,

=116

1
7
+102,

=218

1
7

(3)132-613÷926-23,

=132-

613
926
-23,

=132-23-

613
926

=109-

613
926

=108

313
926

(4)125×(56+34)+45,

=125×90+45,

=11250+45,

=11295.

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