40
twenty 4 x 10 = 40 = 2 x 20
0.15 of them
8 (sum means add 2x10 +10x2 =40 then divide by 5 to find the amount of fives that fit=8)
2 1/2
13 tens is the same as 13 x 10 which equals 130.
twenty 4 x 10 = 40 = 2 x 20
0.15 of them
8 (sum means add 2x10 +10x2 =40 then divide by 5 to find the amount of fives that fit=8)
2 1/2
7.351
13 tens is the same as 13 x 10 which equals 130.
By ones By twos By fours By eights By tens By twenties By fourty (if you want to count that one)
17 tens = (10 + 7) tens = 10 tens + 7 tens = 1 hundred + 7 tens.
170
There are no tens in the tens positional place value holder.
the value of 18 tens is 180
The value of the tens digit is 50