÷ =
7.5+ =
10×25%=
63=
300÷40=
2107﹣997=
25×28=
0.03×0.8=
49×411≈
6310÷68≈
24×5= + = 4﹣1.6= 3.14×32=
25×4+25×4= 0+ = +7= × =
2.7+5.4= ﹣ × =
x﹣1=0.2
x:=21:
50%x+x=15
521+46=
10﹣0.8=
204×5=
8.5÷0.5=
360÷5÷2=
=
1-0.92= - = ×3.2= ÷ ×5=
3.5+4.28= × = ÷ = 99×0.9+0.9=
6.5+2.5= 1.23÷3= 5.2×5= 7÷14%=
= ﹣= ×= 0÷2022=
13.4﹣7.7= = = 299×5≈
300÷12=25(米)他是先求:
36×25=900(平方米)再求: