问题
解答题
脱式计算 ①91-91÷13 ②6÷0.5×4 ③1-0.125÷
④(
|
答案
①91-91÷13,
=91-7,
=84;
②6÷0.5×4,
=12×4,
=48;
③1-0.125÷
,1 8
=1-0.125÷0.125,
=1-1,
=0;
④(
+5 8
)÷25%,1 2
=(
+5 8
)÷1 2
,1 4
=(
+5 8
)×4,1 2
=
×4+5 8
×4,1 2
=
+2,5 2
=4
.1 2