If in total we have 447 blocks,
and we only remove the tens,
write down the resulting exercise:
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If in total we have 447 blocks,
and we only remove the tens,
write down the resulting exercise:
To solve this problem, we need to "remove the tens" from the total number of blocks, which is 447:
Therefore, the result of removing the tens from 447 is .
This exercise corresponds to choice id="2": .
If we have 67 blocks in total, how many blocks will remain if we remove 5 tens and 4 ones?
Remove the tens means take away the value represented by the tens digit. In 447, the tens digit is 4, which represents . So we subtract 40, not just 4!
Count from right to left: ones place (7), tens place (4), hundreds place (4). The tens place is always the second digit from the right.
Because you're subtracting the digit instead of its value! The digit 4 in the tens place is worth 40, not 4. Always convert place value to actual value first.
Your result should have the same hundreds and ones digits as the original number, but the tens digit should be 0. So 447 becomes 407: hundreds=4, tens=0, ones=7 ✓
If there's already a 0 in the tens place (like 405), removing the tens means subtracting , so the number stays the same!
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