Compare 2-Digit Numbers: Unambiguous Tens & Ones 2-74

Find the difference between 2 numbers when one number has both more tens and more ones. How much greater is 77 than 62? Since 70 is 10 more than 60 and 7 is 5 more than 2, 77 is 10+5 = 15 more than 62, and 62 is 15 less than 77. Check by adding or subtracting.

 
 

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