Middle School Math, Warm-Up #5

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Divisibility

Divisibility is an important skill for learning factoring, relationships between prime numbers, and more.

A number is divisible by 3 if

1 point

the remainder left over after the division by 3 is zero.

the sum of all the digits in the dividend is also divisible by 3.

the divisor is 3.

the remainder of the division is 3.

The following method decides if 7,132,429 is divisible by 3? Is this method correct?

1 point

Yes

Clear selection

Type a digit that makes the following statement true.

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Type any digit that makes the following statement true.

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Choose a digit to replace the question mark so that this statement is true: 3,896,78? is divisible by 2.

1 point

Clear selection

Is this statement correct? "A number is divisible by 5 only if it ends with either 0 or 5."

1 point

Yes

Clear selection

Is 384,752 divisible by 5?

1 point

Yes

Clear selection

Select all the digits that can replace the question mark to make this statement true: 18,673,92? is divisible by 3.

1 point

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