Understanding Expanded Form in Subtraction

Understanding Expanded Form in Subtraction

Assessment

Interactive Video

Mathematics

3rd - 4th Grade

Hard

Created by

Thomas White

FREE Resource

The video tutorial explains subtraction to 100 using expanded form. It begins by introducing the concept of expanded form to understand the value of digits in numbers. The tutorial provides examples of subtraction without regrouping, such as 87 minus 35, and with regrouping, like 63 minus 28. The video emphasizes the importance of understanding this strategy, even though it is not typically used to solve equations. The tutorial concludes by highlighting the value of mastering this approach as a foundation for learning other strategies.

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15 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the purpose of using expanded form in subtraction?

To make addition easier

To avoid using calculators

To understand the value of digits

To make subtraction faster

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In expanded form, how would you express the number 87?

80 + 7

70 + 8

85 + 2

90 - 3

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the first step in subtracting numbers using expanded form?

Subtract the tens

Add the numbers

Subtract the ones

Multiply the numbers

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

After subtracting the tens in 87 - 35, what is the result?

70

40

50

60

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the result of 87 - 35 when using expanded form?

54

53

52

55

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why is regrouping necessary in subtraction?

To make subtraction faster

When the top digit is smaller than the bottom digit

To avoid using calculators

To make addition easier

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In the example 63 - 28, what is the expanded form of 63?

60 + 3

50 + 13

65 - 2

70 - 7

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