- = - = + = + = 3- =
53= + = = + - =
13.6+6.44= 1- = 0.48×2.5= 3.15÷3= + =
2.54-0.4= 5.3+7= 9÷14= 0.32= 1.25×0.8÷1.25×0.8=
64÷0.8= 200÷1000= 32= 0.52=
23= 2.44÷0.8= 0.25×0.4= 0.8×0.8÷0.8×0.8=
- = + = 1- = + = 0.42=
- = 5+ = + = - = 1- - =
2÷ =
2- =
1+3.48= 2.6+4= 0.9-0.45= 99×36=
+ = - = + = + - =
- = + = 1- - = - + =
6分米= 米 50千克= 吨 15小时= 日