1.The product of x and 9 is the greatest 2-digit number The value of x is ...............
2. Mary has five packs of pencils. There are 9 pencils in each pack. John has 16 pencils. How many pencils do they have in all?
3. The product of y and 9 is a two-digit number that has the digit 8 in the tens place. When y is divided by 9, the remainder is ................
cai tren minh lam sai cau 2
cau 2 la 42 nha