÷= ×= 1.02﹣0.43= 597×8≈
126÷3= 0.25×0.8= 1÷25%= 725÷92≈
0.77+0.3= 0.35+99×0.35= 10÷10%= 3.2÷0.08= 2.5×0.98×4= 0.8× ÷ = ×6÷ ×6= 5–4÷ = + ÷ + = 2×( + )×4=