问题
解答题
口算. (1)7.2+2.08= (2)
(3)
(4)0÷0.99= (5)32×0.125= (6)0.75×3÷
(7)
(8)
(9)0.8÷0.01= (10)10×
(11)8.4÷0.7= (12)
(13)0.23= |
答案
(1)7.2+2.08=9.28,
(2)
+1 3
=1 4
,7 12
(3)
÷7 10
=11 2
,2 5
(4)0÷0.99=0,
(5)32×0.125=4,
(6)0.75×3÷
=3,3 4
(7)
+3.2÷16×4=1,1 5
(8)
-1 2
×1 2
=1 2
,1 4
(9)0.8÷0.01=80,
(10)10×
-1÷3=3,1 3
(11)8.4÷0.7=12
(12)
×5÷2 3
×5=25,2 3
(13)0.23=0.008.