530-70= 0.37×20= 6.43+1.95= 48÷0.6=8.5-0.24-1.76=350÷50=8.5÷5=320÷40=45-32=1.8×6-1.8= 11) 12.4+0.37= 1-0.62= 720÷9028×6= 25×8...