350×6=
92-37=
620-340=
240×5=
1- =
=
+ =
72-38=
9×70=
80×4=
470+80=
33×3=
57×0=
299×5≈
588+103≈
670+130= 100-54= 84÷2= 15×4=
40×6= 200÷4= 800×5= 69÷3=