6÷7= 11÷14= 21÷25= 33÷43=
15 24 35 40 53 78 92 100 54 45 88 60
=
1﹣=
13÷15=
① - + -
②(28+42)÷0.7
③2.5×1.2
④ + +
⑤ + -
⑥3.25×101-3.25
1÷0.25= +1 = ×24= + =
400×0.02= 10÷ = 6 ×0= 3× ﹣ ×3=