5千克5克=千克 3.8 平方米=平方分米
3.05÷4.21 5.67÷0.1256.7÷1.2 2.84×0.82.84×1.2
①2.5×(4+0.8)×1.25 = 2.5×4+0.8×1.25
②9.8×100.1=9.8×100+0.1
③125×21.7+125×78.3=125×(21.7+78.3)
④17.5÷1.2+17.5÷8.8=17.5÷(1.2+8.8)
7.6+2.4= 0.25×8 = 0.56÷7= 500×0.02= 45÷4.5=
10÷0.01= 0.22+0.8= 10-2.05= 3.5×0.4= 3-0.9+0.1=
①0.125×0.4×2.5×8
②101 ×1.5
③1.08×0.8÷0.27
④12.5-7.43-3.57
⑤3.24×8.4+8.4×1.76