467+125600 320-80 40 1分米100毫米
1000234×4 3980千克 4吨 - +
36+45= 23+53= 92-47= 82-60=
5×40= 90×9= 800×7= 0+60=
36÷6= 41×4= 23×3= 8+125×0=
794-309≈ 996×6≈ + = 1- =
- =( )
64÷4= 24×5= = 1- =
25+13= 76-17= 200+180= 692-103≈
201×5= 8×25= 7×300= 104×8≈
+ = - = + = 1- =
50×90= 3.2-0.8= 54+36= 320÷4=
2.3-0.4= 12×60= 36×20= 0.8+3.6=
45×20= 25+37= 4.9-0.7= 120×4=
92-25= 18×40= 56-25= 47+39=
- = - = + = + = - =
1-0.01= 25×4= 975×0= 12.5×8=
+ = 1- = - = + =
275+323= + = 1- = 308×8≈
78×48×3×0= 1000-750= 128+872= 712×4≈