Understanding Unknown Values in Equations

Understanding Unknown Values in Equations

Assessment

Interactive Video

Mathematics

3rd - 4th Grade

Hard

Created by

Thomas White

FREE Resource

The video tutorial explains how to find an unknown value in a number sentence. It presents two methods: balancing the equation by comparing both sides and calculating the unknown by summing known values. The unknown value is determined to be 3. The video concludes with a call to action to like and subscribe for more content.

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15 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is an unknown value in a number sentence?

A value that is given explicitly

A value that is missing and needs to be found

A value that is always zero

A value that is always negative

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In the given number sentence, what is the expression on the left side?

70 plus 20

70 plus 20 plus 10

10 minus the unknown value

90 plus 7

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the expression on the right side of the given number sentence?

70 plus 20 plus 10 minus the unknown value

70 plus 20

10 minus the unknown value

90 plus 7

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In the first method, what is the value on the left side that needs to be balanced with the right side?

90

7

20

10

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

According to the first method, what should 7 be equal to for the equation to balance?

7 minus the unknown value

10 minus the unknown value

7 plus the unknown value

10 plus the unknown value

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the unknown value according to the first method?

4

5

3

2

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In the second method, what is the total value on the left side of the equation?

100

97

90

110

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