0.8×5= 3.6+1.4= = =
= 0×75%= 4.8÷24= 90×30%=
〇〇
☆☆☆☆☆☆☆☆☆☆☆☆
2分,3分,4分,…各能写多少个字?
写字时间/分
1
2
3
4
…
写字数量/个
15