Question

1. find each difference. if you get stuck, consider drawing a number line diagram

a. $9 - 4$
b. $4 - 9$
c. $9 - (-4)$
d. $-9 - (-4)$
e. $-9 - 4$
f. $4 - (-9)$
g. $-4 - (-9)$
h. $-4 - 9$

Explanation:

Step1: Solve 9 - 4

Subtract 4 from 9. $9 - 4 = 5$

Step2: Solve 4 - 9

Subtract 9 from 4. $4 - 9 = -5$

Step3: Solve 9 - (-4)

Subtracting a negative is adding the positive. $9 + 4 = 13$

Step4: Solve -9 - (-4)

Subtracting a negative is adding the positive. $-9 + 4 = -5$

Step5: Solve -9 - 4

Subtract 4 from -9. $-9 - 4 = -13$

Step6: Solve 4 - (-9)

Subtracting a negative is adding the positive. $4 + 9 = 13$

Step7: Solve -4 - (-9)

Subtracting a negative is adding the positive. $-4 + 9 = 5$

Step8: Solve -4 - 9

Subtract 9 from -4. $-4 - 9 = -13$

Answer:

a. $5$
b. $-5$
c. $13$
d. $-5$
e. $-13$
f. $13$
g. $5$
h. $-13$