62× 7.1+2.9 =440.2+2.9 =443.1 4.2× 0.25 =(4+0.2)× 0.25 =4× 0.25+0.2× 0.25 =1+0.05 =1.05 5.2× 4.3+0.8× 4.3 =(5.2+0.8)× 4.3 =6× 4.3 =25.8 8.5+1.5÷ 0.25× 4 =8.5+6× 4 =8.5+24 =32.5 0.25× 0.8+2.5% =0.2+2.5% =0.225 32× 125× 2.5 =4× 8× 125× 2.5 =8× 125× (4× 2.5) =1000× 10 =10000 94÷ (6.84× 8.531.46÷ 0.55) =94÷ (58.14-57.2) =94÷ 0.94 =100 13÷ 0.4÷ 2.5 =13÷ (0.4× 2.5) =13÷ 1 =13 1.25× 2.5× 0.8 =(1.25× 0.8)× 2.5 =1× 2.5 =2.5 1.5× 101-1.5 =1.5× (101-1) =1.5× 100 =150 4.8× 101 =4.8× 100+4.8× 1 =480+4.8 =484.8 3.25× 4.7-7.8 =15.275-7.8 =7.475 0.57+0.43× 0.24 =0.57+0.1032 =0.6732 945÷ 5÷ 3 =189÷ 3 =63 152× 3÷ 2 =456÷ 2 =228 43× 12× 6 =516× 6 =3096 200+25× 33 =200+825 =1025 (25+26)× 48 =51× 48 =2448 576-(290+107) =576-397 =179 649+124-556 =773-556 =217 4.82-5.2÷ 0.8× 0.6 =4.82-6.5× 0.6 =4.82-3.9 =0.92