Topic 3: Write and Evaluate Expressions

Evaluate the expression below:
 $\left(5.2\ +\ 6.3\right)\ -\ 12\ \div\ 2.5$  

• 0.2

• 11.02

• 67

• 6.7

Water bottles are sold in cases of 24. Select the expression that can represent the total number of water bottles in c cases.

•  $24\ \times\ c$  

•  $24\ \div\ c$  

•  $24\ +\ c$  

•  $24\ -\ c$  

•  $24c$  

Tags

CCSS.3.OA.A.1

CCSS.3.OA.A.3

Select each expression that has a value of 24 when x = 18.

•  $5,760\ \div\ x$  

•  $\frac{x}{6}+21$  

•  $\frac{162}{x}+17$  

•  $2x^2\div27$  

•  $\left(4,050\div x\right)\ -201$  

The same digits are used for the expressions  $5^2$  and  $2^{5^{ }}$ . Which answer correctly compares the value of each expression?

•  $5^{2\ }=\ 5\ \times\ 2\ =\ 10;\ 2^5=2\ \times\ 5\ +\ 10,\ \ 2^5=5^2$  

•  $5^{2\ }=\ 5\times5\ =25;\ 2^5=2\times2\times2\times2\times2=32.\ \ 5^2<2^5$  

•  $5^2=5\times5=25;\ 2^5=2\times2\times2\times2\times2=10.\ 5^2>2^5$  

Are the following expressions equivalent?

6a + 12 and 3(3a +4)

• Yes

• No

Are the following expressions equivalent?

3(5b-2) and 8b-5

• Yes

• No

Are the following expressions equivalent?

5(5c +6) and 25+ 30c

• Yes

• No

Are the following expressions equivalent?

20d-16 and 4(5d-4)

• Yes

• No

Is 5 the GCF of the pair of numbers?

15, 25

• Yes

• No

Is 5 the GCF of the pair of numbers?

40, 70

• Yes

• No