3 × + 2 = 20 24 ÷ = 12 ÷ 4
2 ×= 4 × 4 40 - 8 = 8 ×
6×7= 63÷7= 8×4=
81÷9= 27-9= 56÷8=
8×1= 54+6= 48-8=
40÷5= 7×7= 54÷6=
5×6+8= 6×7-3= 48÷8-4=
四五 ×=
四七 ×=
12÷3=,口诀:。
28-7= 5×8 = 28-16 = 6×4 = 50-6 =
45+7 = 22+60= 6×7 = 7×8-8= 5×5+6=
①6×7-5=
②5×3+5=
③4+4×7=
④29-(4+6)=
⑤8+(60-9)=
⑥9×9-80=
35+4= 5+43= 58-20= 12+6+60=
50+28= 38+40= 76-20+10= 5×4-16=
59-3= 42+6= 4×3= 8×6=
4×6= 7×9-2= 82-7= 56-30=
82-50= 96-60+24=
31+2= 2×4= 40-6= 8×3=
4×9= 6×3= 52+8= 9×7=
82-50= 7×7= 39-9= 17+80=
2×4+10= 6×8-8= 5×6+7= 45-(50-5)=
列式:或