=6 =65 =20 30=?=10 =12 =40 =28
脑筋急转弯 1=5 ,2=10,3=15,4=20,5=?,6=30,7=35,8=40,9=45
50+28= 40+20= 67-27= 24+42= 34+21= 30+29= 38+20= 7+32= 69-40
求未知数 80%x+12=40 x-20%x=16 x+30%x=65 1-13
1题.6比10=12:( )=( ):30=( )除10=100分之( ) 2题.( ):15=20:( )=4:5=2
3X+6=12 40-4X=20 5+6X=35 18=2X-6 20=38-2X = = = = = = = = =
找规律填空.21+19=40 20+20=40 17+23=40 12+28=40 ()+()= ()+()= ()+(
2=6 ,3=12 ,4=20 ,5=30 ,6=42 ,9=多少
设:1=10 2=20 3=30 4=40 5=50 6=60 7=70 8=80 9=?10=?
做算术,填英语单词:20+()=40 ()+15=() ()+30=65 21+26=( )
百分数化分数 1%= 125%= 65%= 10%= 95%= 0.1%= 4%= 100%= 40%= 14%= 2%
1=10,2=15,3=20,4=25,5=30,6=35,7=40,8=45,9=50,10等于多少?
30除以12=60除以24=5:()=10/()=():6