Solve the addition problem:
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Solve the addition problem:
To solve the addition problem , let's perform the following steps:
Thus, combining these we get:
Therefore, the sum of is .
If we have 67 blocks in total, how many blocks will remain if we remove 5 tens and 4 ones?
When adding digits gives you 10 or more, you write the ones digit and carry the tens digit to the next column. For example: 9 + 1 = 10, so write 0 and carry the 1 to the tens place!
Each place can only hold one single digit (0-9). When you get 10, that's really 1 ten and 0 ones, so the 1 belongs in the tens column!
You need to regroup whenever adding any column gives 10 or more. In 19 + 41, since 9 + 1 = 10, you must regroup by carrying the 1 to the tens place.
You'll get the wrong answer! In this problem, forgetting the carried 1 would give you 50 instead of 60. Always remember: tens digit + tens digit + any carried amount.
You could think: 19 is close to 20, so 20 + 41 = 61, then subtract 1 to get 60. But learning the standard algorithm helps with bigger numbers!
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