125×(8×) = (125×)×13
570÷15= 570÷38=
0.402 2.8 0.41 4.1
<<<
84÷21= 300-50÷5= 760-10×50=
0÷35= 45÷(3×5) = 200÷5÷4= 3.6×10= 35-5×6= 58×0+987= 9×0= 358+42= 12+25×4=
①58×72+28×58
②3000÷125÷8
③486-137-63
④432÷54+17×54
⑤102×57
⑥125×32×25