2.8×5.6+3.4×245 +280%=
1.7×38 +2.3×38=
2.64÷7+3.36×17 +17=
7.4+459 +2.6+549=
24×(512 －38 +16 )=
0.125×212 ×32=
(89 +23 －127 )×27=
1.25×2710 +345 ÷0.8 26×211...
2.8×5.6+3.4×245 +280%=
1.7×38 +2.3×38=
2.64÷7+3.36×17 +17=
7.4+459 +2.6+549=
24×(512 －38 +16 )=
0.125×212 ×32=
(89 +23 －127 )×27=
1.25×2710 +345 ÷0.8 26×211...