Question

in each equation, the ? represents an operation. which operation makes each equation true?
a. 48 ? (-8) = (-6)
b. (-40) ? 8 = (-5)
c. 12 ? (-2) = 14
d. 18 ? (-12) = 6
e. 18 ? (-20) = -2
f. 22 ? (-0.5) = -11

Explanation:

Step1: Test division for a

$\frac{48}{-8} = -6$

Step2: Test division for b

$\frac{-40}{8} = -5$

Step3: Test addition for c

$12 + (-2) = 14$

Step4: Test subtraction for d

$18 - (-12) = 6$

Step5: Test addition for e

$18 + (-20) = -2$

Step6: Test multiplication for f

$22 \times (-0.5) = -11$

Answer:

a. Division ($\div$)
b. Division ($\div$)
c. Addition ($+$)
d. Subtraction ($-$)
e. Addition ($+$)
f. Multiplication ($\times$)