Question

question 7
add. $15.24 + 5.09$
$\circ$ $20.33$
$\circ$ $20.249$
$\circ$ $66.14$
$\circ$ $21.14$

Explanation:

Step1: Align decimal points

$$15.24 + 5.09$$

Step2: Add hundredths place

$$0.04 + 0.09 = 0.13$$

Step3: Add tenths place

$$0.2 + 0.0 + 0.1 = 0.3$$

Step4: Add whole numbers

$$15 + 5 = 20$$

Step5: Sum all components

$$20 + 0.3 + 0.03 = 20.33$$

Answer:

20.33