问题
解答题
|
答案
2.5×4=10; 12.5×0.8=10; 0.25×0.04=0.1; 0.5×20=10;
7.2÷4=1.8;
-7 8
=4 8
; 1-3 8
=5 9
; 4 9
+2 3
=1.1 3
|
2.5×4=10; 12.5×0.8=10; 0.25×0.04=0.1; 0.5×20=10;
7.2÷4=1.8;
-7 8
=4 8
; 1-3 8
=5 9
; 4 9
+2 3
=1.1 3