Adding and Subtracting Positive and Negative Fractions Explained

What is the first step when adding or subtracting signed fractions?

• Simplify the fractions

• Stack the fractions vertically

• Ignore the signs

• Find the common denominator

Tags

CCSS.7.NS.A.1C

When adding fractions with the same sign, what should you do with the signs initially?

• Ignore them

• Change them to positive

• Change them to negative

• Add them directly

Tags

CCSS.7.NS.A.1C

How do you find a common denominator for the fractions 2/3 and 4/9?

• Add the denominators

• Multiply the larger denominator by 3

• Multiply the smaller denominator by 3

• Multiply both denominators by 3

What is the result of adding 6 and 2/3 to 4 and 4/9 after finding a common denominator?

• 11 and 6/9

• 10 and 6/9

• 11 and 1/9

• 10 and 1/9

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

When subtracting fractions with different signs, which number should be on top?

• The positive number

• The number with the largest absolute value

• The number with the smallest absolute value

• The negative number

Tags

CCSS.7.NS.A.1C

What is the first step when subtracting fractions with different signs?

• Subtract the numerators

• Borrow from the whole number

• Find the common denominator

• Change the signs

Tags

CCSS.7.NS.A.1C

In the example of subtracting 3 and 5/9 from 7 and 4/9, what do you need to do before subtracting the numerators?

• Change the signs

• Add the numerators

• Find a new common denominator

• Borrow from the whole number

Tags

CCSS.7.NS.A.1C

What is the result of subtracting 3 and 5/9 from 7 and 4/9 after borrowing?

• 4 and 9/9

• 3 and 9/9

• 3 and 8/9

• 4 and 8/9

Tags

CCSS.7.NS.A.1C

How do you determine the sign of the result when adding or subtracting fractions with different signs?

• By ignoring the signs

• By comparing the absolute values

• By adding the signs

• By subtracting the signs

Tags

CCSS.7.NS.A.1C

What is the final result of adding -3 and 5/9 to 7 and 4/9?

• 3 and 9/9

• 4 and 8/9

• 3 and 8/9

• 4 and 9/9

Tags

CCSS.7.NS.A.1C