90 + 7 is not and has never been equal to 70 + 9
99
80
How many tens are the same as 6 hundreds. Explain your reasoning
573
434.
99
100 is the same as 10 tens meaning 10 times 10 = 100
74
80
Your correct answer is hundreds place because you have your ones period like ones tens hundreds same with the thousands period ones tens hundreds.
How many tens are the same as 6 hundreds. Explain your reasoning
7 tens and 20 ones is 7 × 10 + 20 × 1 = 70 + 20 = 90 (ninety).
573
No tens. There are 3.6 ones.
434.
It is 674.
4 tens + 9 ones 3 tens + 19 ones 2 tens + 29 ones 1 ten + 39 ones 49 ones.