Solve the addition problem:
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Solve the addition problem:
To find the sum of and , we'll perform the following steps:
Therefore, the sum of and is .
Among the provided answer choices, is the correct answer.
If we have 85 blocks in total, how many blocks will remain if we remove 4 tens and 1 one?
Because , which has two digits! The ones place can only hold single digits (0-9). So you write the 0 in ones place and carry the 1 to the tens place.
You'll get the wrong answer! In this problem, forgetting the carried 1 would give you instead of . Always remember: tens column = original tens + carried amount.
Always start from the rightmost column (ones place) and work left. This ensures you handle any carrying correctly. Left-to-right addition often leads to errors with regrouping.
Try these methods:
Place value alignment ensures you're adding like with like - ones with ones, tens with tens. Without proper alignment, you might accidentally add a ones digit to a tens digit, giving completely wrong results!
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