233+67=
23×4=
5.28-5.2=
=
32÷0.5=
1 千米的7千米的 4.35×1.024.35 2
3÷12=
642÷81≈
705-455=
0.3×400=
①150+500=
②1.2+2.3=
③240-200=
④4.85-3.15=
⑤
⑥
⑦5.4÷0.9=
⑧2.5×0.4=
⑴2 +3.7=
⑵
⑶16×0.5=
⑷
⑸210-98=
⑹1.2÷=
⑺
⑻1-=
﹣0.5= +3= ×= 0.8×=
0.23+177%= 2.5×40= 1÷= ×÷×=
18× = 3.5× = × =
5.6÷ = ÷4= ÷ =