3.62×0.993.62 5.8×1.015.8 4.7×1047
∠1=
∠2=
∠3=
①4cm②7cm③8cm④11cm
0.3×0.8= 0.5×0.01= 2.009×100= 5.3+7=
5.4+5.06= 10-2.3= 6.2÷10= 0.24×5=
47÷100= 40×0.4= 12.5×10= 20.6+9.4=
①31.6-10.8=
②23.27+8.3=
③6.7×0.26=
④3.6×500=
①6x=42
②5y+3.5=48.5
③14x-9=145
④17+x=43
年份
2016
2017
2018
2019
2020
2021
数量/个
3
10
22
38
55
78