If we have 63 blocks in total and we add a further 9 ones, how many blocks will we have in total?
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If we have 63 blocks in total and we add a further 9 ones, how many blocks will we have in total?
To solve this problem, we need to add the additional blocks to the existing blocks:
Now, let's calculate:
Performing the addition, we have:
This calculation gives us the total number of blocks. Therefore, the solution to the problem is that there are 72 blocks in total.
If we have 67 blocks in total, how many blocks will remain if we remove 5 tens and 4 ones?
The large rectangles represent tens (each worth 10), and small squares represent ones (each worth 1). Count 6 tens blocks and 3 individual ones blocks to get 63.
You get 63 + 9 = 72. This means you now have 6 tens and 12 ones, which can be regrouped as 7 tens and 2 ones, but the total is still 72.
Since we're just finding the total, we don't need to regroup. We started with 63 and added 9 to get 72. Regrouping would be needed if we were showing the final arrangement as tens and ones.
Absolutely! The blocks help you visualize, but you can simply calculate using mental math or the standard addition algorithm.
Double-check by counting systematically:
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