50×7=
120×30=
84÷7=
60×15=
0÷38=
540÷9=
18×5=
490÷70=
49×43≈
495×74≈
629÷71≈
639÷83≈
15×80=
150×8=
150×80=
2.3×6= 6.5÷0.01= 0.36÷0.4= +=
0.82= 1.2×= -= 4.3÷2.5÷4=
7.15﹣1.5= +0.25=
10﹣6.8= ﹣ = 35×1%= 1.25×24= 5× ÷5× =
0.42= 10÷0.02= 5a×7a= 1÷3= 1﹣1÷6=