题目内容

【题目】脱式计算:

÷×

×99

0.125×2.5×32

÷÷

﹣1)×

×17﹣

【答案】(1)÷×

=×

=

(2)×99

=×(98+1)

=×98+×1

=23+

=23

(3)0.125×2.5×32

=0.125×2.5×(4×8)

=(0.125×8)×(2.5×4)

=1×10

=10;

(4)÷÷

=÷

=

(5)(﹣1)×

=×﹣1×

=1﹣

=

(6)×17﹣

=×(17﹣1)

=×16

=15.

【解析】解:(1)÷×

=×

=

(2)×99

=×(98+1)

=×98+×1

=23+

=23

(3)0.125×2.5×32

=0.125×2.5×(4×8)

=(0.125×8)×(2.5×4)

=1×10

=10;

(4)÷÷

=÷

=

(5)(﹣1)×

=×﹣1×

=1﹣

=

(6)×17﹣

=×(17﹣1)

=×16

=15.

练习册系列答案
相关题目

违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com

精英家教网