In total we have 48 blocks. How many ones do we need to add in order for the number of blocks to be divisible by 10?
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In total we have 48 blocks. How many ones do we need to add in order for the number of blocks to be divisible by 10?
To solve this problem, follow these steps:
Let's work through these steps:
Step 1: Calculate .
When 48 is divided by 10, the quotient is 4 with a remainder of 8. Thus, .
Step 2: Since we want the total number of blocks to be divisible by 10, we need to reach the next multiple of 10, which is 50.
To find out how many blocks need to be added, subtract the remainder from 10:
.
Therefore, we need to add 2 blocks to the original 48 blocks to make the total divisible by 10. Hence, the correct choice is 2.
If we have 67 blocks in total, how many blocks will remain if we remove 5 tens and 4 ones?
A number is divisible by 10 when it can be divided by 10 with no remainder. Examples: 20, 30, 50, 100 are all divisible by 10.
The remainder tells us how far we are from the next multiple of 10. Since 48 has remainder 8, we need more to reach 50.
If a number like 40 is already divisible by 10, the remainder is 0, so you don't need to add anything! blocks needed.
Absolutely! To make any number divisible by 5, find the remainder when dividing by 5, then subtract from 5. Same logic works for any divisor.
Look at the last digit for divisibility by 10! Since 48 ends in 8, the remainder when dividing by 10 is simply 8.
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