5.6-5.2= 0.16+0.4= 21.4-3.7-6.3= 3.91+4.6-3.9=
0.75+0.7= 8.5-0.05= 76+24×5= 6.2+7.9+0.8=
200÷25= 1-0.99= 5.24×100÷10= 100-100÷5=