If we have 28 blocks and we add a further 36 blocks, how many blocks will we have in total ?
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If we have 28 blocks and we add a further 36 blocks, how many blocks will we have in total ?
To solve this problem, we will use straightforward addition:
Therefore, the total number of blocks is .
If we have 67 blocks in total, how many blocks will remain if we remove 5 tens and 4 ones?
When you add 28 + 36, you need to consider place value! The 2 in 28 represents 20, not just 2. Adding digit by digit ignores place values and gives wrong answers.
Use subtraction to check! Take your answer and subtract one of the original numbers. 64 - 28 = 36 or 64 - 36 = 28. If you get the other original number, you're right!
Start by adding the ones place: 8 + 6 = 14. Write down 4 and carry the 1. Then add tens: 2 + 3 + 1 = 6. Your answer is 64!
Yes! You could break it down: 28 + 30 + 6 = 58 + 6 = 64. Or think of it as 30 + 40 - 2 - 4 = 70 - 6 = 64. Multiple paths lead to the same answer!
The visual represents the 28 blocks and 36 blocks you're combining. Visual models help you see that addition means putting groups together to count the total!
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