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Subtraction 4 Mental Strategies

Subtraction 4 Mental Strategies

Assessment

Presentation

Mathematics

4th Grade

Medium

Created by

hazem marghany

Used 23+ times

FREE Resource

10 Slides • 9 Questions

1

Subtraction 4 Mental Strategies

Partitioning

Round and Adjust

​Counting On

​Counting

2

​Correcting HW

​Please Open Your copybooks

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3

​Correcting HW

​Please Open Your copybooks

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4

​Subtraction Keywords

​How many more than

​How many less than

What's the difference

​How many fewer

How many less than

​Take away

​https://www.youtube.com/watch?v=3KHa16KZeHU

5

Multiple Choice

What is a difference?

1

The answer to any math problem.

2

The answer to a subtraction problem.

3

The answer to an addition problem.

6

Mental Subtraction

When we subtract numbers mentally, we are trying to find a quick way of subtracting the numbers in our heads. Let us take a look at some examples.

7

Fill in the Blank

What is 569 - 53?

8

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​49-34 = 15

9

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10

Fill in the Blank

Miles was walking 56 dogs. 19 dog ran away. How many dogs are left?

11

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​87 - 75 =

12

Fill in the Blank

Subtract 4 from 802 mentally.

13

Fill in the Blank

706 - 15

14

Write the 1) strategy name Then 2) answer the following subtraction problems:-

​(Round & Adjust , Counting on , Counting back , Partitioning)

Homework - Solve in your copybook

15

​Answers

Please Write the final answers From your copybooks in the next slides

16

Fill in the Blank

(1)456  321\left(1\right)456\ -\ 321

17

Fill in the Blank

(2)456  298\left(2\right)456\ -\ 298  

18

Fill in the Blank

(3)508  489\left(3\right)508\ -\ 489  

19

Fill in the Blank

(4)406  12\left(4\right)406\ -\ 12

Subtraction 4 Mental Strategies

Partitioning

Round and Adjust

​Counting On

​Counting

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