This is copied from the internet, because I have never seen the problem of summer homework, so I don't guarantee the accuracy, for reference only. Also, Baidu has a: summer homework, maybe you can find something useful.
I hope it helps you a little, hehe.
PS: Southern Publishing House, page 25.
I. 1. 1532 106
2.ab
3. Square centimeter cubic centimeter
4.0.355/64.830307/60.088
Two. xx√x√
Three. 1.v=4x4x4=64 cubic decimeter s=4x4x6=96 square decimeter.
2.V = 3x9 = 8 1 cubic decimeter s=(3x3+3x9+3x9)x2= 126 square decimeter.
Four. 1.(3/4+ 1/3)-(3/4- 1/3) = 2/3
2.8/ 15-3/20+8/ 15= 1 1/ 12
3.3x 1/4-5x 1/ 12 = 1/3