Unit 1: Foundations of Algebra: Number Calculations

To solve a simple addition or subtraction problem, which symbols would you use?

• +, -, and =

• *, /, and =

• + and * only

• - and / only

Provide an example of adding a positive and a negative number, and solve it.

• Example: 5 + (-3) = 2

• Example: 5 + (-3) = 8

• Example: 5 + (-3) = -8

• Example: 5 + (-3) = -2

Give an example of a multiplication or division problem with positive integers and solve it.

• Example: 4 × 3 = 12 or 12 ÷ 3 = 4

• Example: 4 × 3 = 7 or 12 ÷ 3 = 2

• Example: 4 × 3 = 15 or 12 ÷ 3 = 5

• Example: 4 × 3 = 10 or 12 ÷ 3 = 6

Read each scenario to anchor the math problem. Then read each question and write the student's answer in the blank space. 1. 16 + 23 = ______

• 39

• 29

• 33

• 41

Read each scenario to anchor the math problem. Then read each question and write the student's answer in the blank space. 2. 37 - 14 = ______

• 23

• 19

• 27

• 31

Read each scenario to anchor the math problem. Then read each question and write the student's answer in the blank space. 3. 19 + 45 = ______

• 64

• 54

• 65

• 59

Read each scenario to anchor the math problem. Then read each question and write the student's answer in the blank space. 4. 33 - 27 = ______

• 6

• 5

• 7

• 9

Read each scenario to anchor the math problem. Then read each question and write the student's answer in the blank space. 5. (32 - 12) + 8 = ______

• 28

• 22

• 30

• 18

Read each scenario to anchor the math problem. Then read each question and write the student's answer in the blank space.

6. (15 + 6) - 3 = ______

• 18

• 16

• 20

• 14

Read each scenario to anchor the math problem. Then read each question and write the student's answer in the blank space.

7. 10 + -5 = ______

• 5

• -15

• -5

• 10