÷ =
﹣ =
× =
+ × ×0=
43.96+31.4=
0.625×8=
2.8× =
0.25×16=
①8.69﹣(2.69+3.25)
②
③4×0.56×25
④
①
②36×()
③
⑤3.24×0.76+3.24×0.24
⑥
x
8
?
y
24
6
验算
①3.86+6.4+2.14+7.6
②5.2÷0.32﹣0.12
③()×15
⑤