If we have 57 blocks and we add a further 8 blocks, how many blocks will we have in total?
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If we have 57 blocks and we add a further 8 blocks, how many blocks will we have in total?
To solve this problem, follow these steps:
Now, carrying out the calculation:
We start with blocks. When we add another blocks, the operation is:
Therefore, after adding the additional blocks, we have a total of blocks.
Add fifty units to the number 31.
What is the resulting number?
When adding 57 + 8, you're adding a two-digit number to a one-digit number. The 8 goes in the ones place, so you add 7 + 8 = 15, which means 1 ten and 5 ones, giving you 65 total.
Write the problem vertically! Put 57 on top and 8 underneath, lining up the ones place. This makes it clear: 7 + 8 = 15, so write down 5 and carry the 1 to make 65.
Try counting up from 57: 58, 59, 60, 61, 62, 63, 64, 65. That's 8 jumps forward! You can also use subtraction: 65 - 8 = 57 ✓
Yes! Since 7 + 8 = 15, you know you have 1 ten and 5 ones. Add that 1 ten to the 5 tens you already have: 5 + 1 = 6 tens, plus 5 ones = 65.
The same method works! Always line up the ones place first, add from right to left, and carry over when you get 10 or more in any column.
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