题目内容
【题目】能简算的要简算
17× | ( |
|
|
| 44﹣72× | [ |
|
| ( |
【答案】①9
;②44;③
;④![]()
⑤
;⑥14;⑦
;⑧![]()
⑨9;⑩![]()
【解析】
①17× ![]()
=(16+1)× ![]()
=16×
+1× ![]()
=9+ ![]()
=9![]()
②(
+
)×32
=
×32+
×32
=24+20
=44
③
×
+
×![]()
=
×(
+
)
=
×1
= ![]()
④
×
×16
=
×(
×16)
=
×2
= ![]()
⑤
+
× ![]()
=
+ ![]()
=
+ ![]()
= ![]()
⑥44﹣72× ![]()
=44﹣30
=14
⑦[
×(
﹣
)]÷ ![]()
=[
×
]÷ ![]()
=
÷ ![]()
= ![]()
⑧
÷(
+
)
=
÷(
+
)
=
÷ ![]()
=
× ![]()
= ![]()
⑨
×16﹣
×14+
×70
=
×(16﹣14+70)
=
×72
=9
⑩(
+
)× ![]()
=
×
+
× ![]()
=
+ ![]()
= ![]()
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