How many units are there in total if we add 3 units to 9 units?
Remember that the number of units here is the sum of the two amounts.
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How many units are there in total if we add 3 units to 9 units?
Remember that the number of units here is the sum of the two amounts.
To solve this problem, we will follow these steps:
Now, let's work through each step:
Step 1: The problem gives us 3 units and 9 units.
Step 2: We'll use the addition operation.
Step 3: Check the given choices to ensure our answer, 12, matches one of them.
Therefore, the solution to the problem is .
If we have 67 blocks in total, how many blocks will remain if we remove 5 tens and 4 ones?
Look for key words like 'add', 'sum', 'total', 'altogether', or 'in all'. These signal that you need to combine the numbers using addition!
Start with the larger number (9) and count up by the smaller number (3). So: 9 → 10 → 11 → 12. This counting method helps avoid mistakes!
Yes! Addition is commutative, which means 3 + 9 gives the same answer as 9 + 3. Both equal 12!
Try counting backwards from your answer. If 12 is correct, then 12 - 3 should equal 9, and 12 - 9 should equal 3. Both work, so 12 is right!
Focus on the numbers given and the question asked. Here we have '3 units' and '9 units', and we need the 'total'. That means: 3 + 9 = 12 units.
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