Solving One-Step Equations: Key Concepts and Techniques

This video tutorial covers setting up and solving one-step equations using bar models. It includes various problems involving addition, subtraction, multiplication, division, and fractions. Each problem is explained step-by-step, demonstrating how to solve for the unknown variable using different mathematical operations and visual models.

What is the value of 'n' when a number equals 42?

• 49

• 42

• 35

• 32

Tags

CCSS.6.EE.B.5

If 7 is added to a number and the result is 42, what is the number?

• 35

• 7

• 42

• 49

Tags

CCSS.6.EE.B.7

What number, when 7 is subtracted, gives 42?

• 35

• 42

• 49

• 56

Tags

CCSS.1.OA.D.8

If a number is multiplied by 7 and the result is 42, what is the number?

• 6

• 7

• 42

• 35

Tags

CCSS.3.OA.A.4

What is the result when a number is doubled and equals 16?

• 8

• 16

• 32

• 4

Tags

CCSS.6.EE.B.7

If half of a number equals 16, what is the full number?

• 64

• 16

• 8

• 32

Tags

CCSS.6.EE.B.7

What number is one-third of 21?

• 63

• 84

• 7

• 21

Tags

CCSS.4.NF.B.4B

CCSS.4.NF.B.4C

Calculate the original number if two-thirds of it equals 8.

• 24

• 4

• 16

• 12

Tags

CCSS.6.EE.B.7

What is the original number if three-fourths of it equals 15?

• 30

• 60

• 45

• 20

Tags

CCSS.4.NF.B.4B

CCSS.4.NF.B.4C

If a number is divided into four equal parts and three of them sum up to 15, what is the total number?

• 40

• 30

• 25

• 20

Tags

CCSS.3.OA.A.3