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WEEK 6 

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Meaning of Sum

           

What is sum?

             

In mathematics, sum is the answer we get by adding two or more numbers together.

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 Find the doubles.

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Double means adding the same number together.

Example 1

What is the double of 14?

14 + 14 = 28

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Example 2

What is the double of 65?

65 + 65 = 130

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Example 3

What is the double of 320?

320 + 320 = 640

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 Adding Tens and Hundreds

2789 +10 =

2799

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3084 +40 =

3124

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7063 +200 =

7263

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5119 +900 =

6019

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 Addition without Regrouping  

Find the sum of 1357 and 5241.

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Step 1 : Add the ones.

Step 2 : Add the tens.

Step 3 : Add the hundreds.

Step 4 : Add the thousands.

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Add from right to left.

The sum of 2000 and 7876 is         .

9876

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Add from right to left.

Add 5042 and 3857.

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Add from right to left.

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1445 +3 =

1448

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9571 +28 =

9599

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4152 + 736 =

4888

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Exercise 1: Number Patterns and more/less exercises given on the

5th February 2022. 

(Due Date: 12th February 2022)

Exercise 2: Please complete workbook pages 20-26. You may collect your workbook on Saturday, 12th February 2022 from your respective class teacher.

(Due Date: 19th February 2022)

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