89
The number is 79. 7 x 10 = 70 + 9 = 79.
1
HOW MUCH IS 10 TENS
17 tens = (10 + 7) tens = 10 tens + 7 tens = 1 hundred + 7 tens.
The product of 10 tens is 100
The number is 79. 7 x 10 = 70 + 9 = 79.
1
80
HOW MUCH IS 10 TENS
190
17 tens = (10 + 7) tens = 10 tens + 7 tens = 1 hundred + 7 tens.
The product of 10 tens is 100
Write 87 tens and 2 ones as a base ten number.
two hundred and thirty23 x 10 = 230
100
10
Nine tens = 90 Ten ones = 10 90 + 10 = 100