Adding and Subtracting Rational Numbers

 $-\ 3.5\ +\ \left(-4.9\right)$  

• -1.4

• 8.4

• 1.4

• -8.4

Answer explanation

Remember the integer rules!

Tags

CCSS.7.NS.A.1C

 $-\frac{2}{9}+\frac{3}{9}=$  

•  $-\frac{5}{9}$  

•  $\frac{5}{9}$  

•  $-\frac{1}{9}$  

•  $\frac{1}{9}$  

Answer explanation

The signs are different, so FIND THE DIFFERENCE.
3-2 = 1.  Since 3 is greater and positive, the answer is positive.

Tags

CCSS.7.NS.A.1C

 $-2\ \frac{1}{4}+\left(-3\ \frac{1}{4}\right)=$  

•  $-5\ \frac{1}{2}$  

•  $1$  

•  $5\ \frac{1}{2}$  

•  $5\ \frac{2}{4}$  

Tags

CCSS.7.NS.A.1C

 $-0.6\ +\ \left(-2.5\right)=$  

•  $-1.9$  

•  $1.9$  

•  $-3.1$  

•  $3.1$  

Tags

CCSS.7.NS.A.1C

 $-\frac{3}{4\ }+\frac{1}{5}$  

•  $\frac{11}{20}$  

•  $-\frac{11}{20}$  

•  $-\frac{2}{9}$  

•  $\frac{19}{20}$  

Tags

CCSS.7.NS.A.1C

 $-3+\left(7.5\right)=$  

•  $10.5$  

•  $7.2$  

•  $4.5$  

•  $-4.5$  

Tags

CCSS.7.NS.A.1C

 $32.8\%\ +\ 0.9\%$  

• 32.89%

• 41.8%

• 33.7%

Tags

CCSS.5.NBT.B.7

81.2% - 34.5%

• 46.7%

• 115.7%

• 45.8%

Tags

CCSS.5.NBT.B.7