80
80
89
74
Write 87 tens and 2 ones as a base ten number.
71 72 73 74 75 76 77 78 79
Do it one piece at a time. Seven tens is 70. Nine ones is 9.Now add 70 + 9 and you get 79.
89
74
80
There are 20: 70-79, 170-179
Write 87 tens and 2 ones as a base ten number.
71 72 73 74 75 76 77 78 79
How many tens are there in 1700?
Do it one piece at a time. Seven tens is 70. Nine ones is 9.Now add 70 + 9 and you get 79.
How many tens are in 72539.7 tens39.5 tens100,000 tens.34.8
The number is 79. 7 x 10 = 70 + 9 = 79.
3.6
72.5 of them.