Quick Subtraction Methods and Techniques

Quick Subtraction Methods and Techniques

Assessment

Interactive Video

Mathematics

3rd - 4th Grade

Hard

Created by

Thomas White

FREE Resource

The video tutorial introduces a subtraction problem requiring regrouping and demonstrates a traditional method to solve it. It then presents a quicker method by subtracting 1 from both numbers, eliminating the need for regrouping. The trick is applied to various examples, showing its effectiveness across different numbers. The lesson concludes with a final example, reinforcing the quick subtraction method.

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17 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the initial subtraction problem introduced in the video?

1000 minus 476

1000 minus 673

1000 minus 5730

1000 minus 573

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why is regrouping necessary in the subtraction problem 1000 minus 573?

Because the ones place is larger than the tens place

Because all digits are non-zero

Because the thousands place is zero

Because the ones, tens, and hundreds places are zero

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In the traditional method, from which place do we start borrowing?

Hundreds place

Ones place

Tens place

Thousands place

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the result of 1000 minus 573 using the traditional method?

627

427

527

327

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the first step in the quick subtraction method?

Add 1 to both numbers

Subtract 1 from both numbers

Multiply both numbers by 10

Divide both numbers by 10

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the result of 999 minus 572 using the quick method?

427

527

627

327

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How does the quick method simplify subtraction?

By using division

By using addition

By using multiplication

By avoiding regrouping

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