313+61+87+239 487-134-166 35×201-35
125×24 28×159-28×59 6000÷25÷4
503+497 =
62+38×0=
52+25-52+25=
0.6÷100=
1 . 36×1000 =
28÷4×7=
174-48-52=
5×4÷5×4=
42 - 42÷42 =
