用递等式式计算. 16 27 × 1 7 + 5 27 ÷7 (800× 1 4 -160)÷ 1 2 62.7-59.

yyy662022-10-04 11:39:541条回答

用递等式式计算.
16
27
×
1
7
+
5
27
÷7
(800×
1
4
-160)÷
1
2
62.7-59.4÷55×4.

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(1)
16
27 ×
1
7 +
5
27 ÷7,
=(
16
27 +
5
27 )×
1
7 ,
=
21
27 ×
1
7 ,
=
1
9 ;

(2)(800×
1
4 -160)÷
1
2 ,
=(200-160) ÷
1
2 ,
=40 ÷
1
2 ,
=80;

(3)62.7-59.4÷55×4,
=62.7-1.08×4,
=62.7-4.32,
=58.38.
1年前

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