3.64×100= 0.43+0.54= 56.4+13.8= 10﹣2.8=
8.15+17= 7.8﹣3.7= 8+9.4= 25×38×4=
①79+113+21+87
②2600÷25÷4
③(169+314)-315÷9
④28.63+15.4-8.63
⑤53×36+36×47
⑥4.88-2.34+5.12-1.66
0.6+0.6= 2.52+0.48= 12.8+15.4= 8.62-0.35=
4.7-1.2= 5.3-2.18= 20-0.7= 5.2-1.8=