⑴1.9+0.05= ⑷7x﹣x= ⑺[2,15]= ⑽>( )
⑵5.8×2= ⑸6a+15a= ⑻[5,35]= ⑾>( )
⑶1.21÷1.1= ⑹(18,20)= ⑼[9,12]= ⑿<( )
①24和36
②33和66
③51和68
①
②
③
④
0.38 2.56
1.5﹣0.45= 7.81+0.9= 7.5﹣2.5=
12÷0.4= 9.56+4.44= 2.9+3.7+2.1=
23= 1.25×5×8= 7.6×8+2.4×8=
1.5×0.6= 7.7÷0.1= 450÷25= 0.8-0.08+0.8=
9-0.99= 48÷0.25÷4= 0.6+0.34= 5.46÷3.4≈(得数凑整到0.01)
分数
小数
①12.5×(8+0.8)
②+×
③+÷
④26﹣7.28﹣12.72
⑤5.8×4.1+5.9×5.8
⑥÷(+1.4×)