If we have 27 blocks in total and we remove 18 of those blocks, how many blocks remain? Remember you can break down a row of 10 blocks into single units.
If we have 27 blocks in total and we remove 18 of those blocks, how many blocks remain? Remember you can break down a row of 10 blocks into single units.
To solve this problem, begin by employing the basic subtraction formula:
Perform the subtraction:
.
Therefore, the number of blocks remaining after removing 18 from 27 is .