( ﹣ )×15 4×0.8×2.5×12.5 57×99+57
9.6﹣1.46﹣0.54 897÷25÷4 5.8×4.7+4.2×4.7.
8+1.35= 640÷16= 6.4÷80%= 98+52=
×3×4= 10÷ = ×24= 1.52-0.5=
×0+ = 3.7- - =
①
②
③8888×58-4444×16+44
④150-120÷1.4×0.84
⑤
⑥
① + +
② + ×
③86×
④( + )÷
⑤ × +
⑥6×12×( - )
×0= ×12= × = × ÷ × =
( + - )×30= ÷ = 3.14×25= 0.12=
1÷0.25= 15×60= 72×25%=
1.1-0.01= 12÷ =
24×( )=
①( )×36
②
③3.36×5.7+66.4×0.57
④12.5×25× ×4