Study P2 Mathematics Addition and Subtraction 1 - Geniebook

Addition And Subtraction 1

In this article, we will learn about Addition and Subtraction. The learning objectives are:

  1. Addition without renaming
  2. Addition with renaming
     

Topic Recap: 

Addition Within 100 Without Renaming 

 

Example: 

Jerry went to an arcade. He won 38 tickets from his first game and 21 tickets from his second game. How many tickets did he win altogether from the 2 games?

 

Solution:

\(38 + 21 = 59\)

Answer: 

59 tickets


 

Question 1

Add 50 to 25.  

                                                                                                                                                                                                                                      

  1. 25
  2. 26
  3. 73
  4. 75

 

Solution:

\(50 + 25 = 75\)

Answer: 

(4) 75


 

1. Addition Without Renaming

 

Example:

There are 453 boys and 216 girls in a school. How many boys and girls are there in the school altogether?

 

Solution:

\(453 + 216 = 669\)

 

Answer: 

669 boys and girls


 

Question 1

Add 402 to 256.

 

  1. 254
  2. 608
  3. 658
  4. 659

 

Solution:

\(402 + 256 = 658\)

Answer: 

(3) 658


 

Question 2:

Add 654 to 123.

 

  1. 767
  2. 777
  3. 778
  4. 779

 

Solution:

\(654 + 123 = 777\)

Answer:

(2) 777


 

Topic Recap:

Addition Within 100 With Renaming

 

Example: 

Kenny collects stamps. He has 67 foreign stamps and 28 local stamps. How many stamps does he have altogether?

                                                                                              

Solution: 

\(67 + 28 = 95\)

Answer:

95 stamps


 

Question 2: 

Add 39 to 45.

 

  1. 73                                                              
  2. 74                                                        
  3. 83                                                       
  4. 84     

 

Solution: 

\(39 + 45 = 84\)

 

 

 

Answer: 

(4) 84


 

2. Addition With Renaming

 

Example: 

There are 378 adults and 414 children in the estate. How many people are there in the estate altogether?

                                                                                                                              

Solution: 

\(378 + 414 = 792\)              

               

Answer: 

792 people


 

Question 1: 

Add 316 to 497.

                                                   

  1. 703                                                        
  2. 803
  3. 813
  4. 913

 

Solution:

\(316 + 497 = 813\)

Answer: 

(3) 813


 

Question 2:

The sum of 237 and 508 is __________.

 

  1. 733
  2. 735
  3. 743
  4. 745

 

Solution:

\(237 + 508 = 745\)

Answer:

(4) 745 


 

Question 3:

Use the numbers below to form an addition sentence. You can use numbers more than once. 



 

Solution:

Answer: 

\(115 + 65 = 180\)


 

Question 4:

\(280 + 120 =\) __________ tens

 

  1. 30
  2. 40
  3. 300
  4. 400

 

Solution:

\(280 + 120 = 400\)

\(400 = 40\) tens

Answer: 

(2) 40


 

Question 5:

\(278 + 222 =\) __________ hundreds

 

  1. 5
  2. 40
  3. 50
  4. 4

 

Solution:

\(278 + 222 = 500\)

\(500 = 50\) tens

Answer: 

(1) 5


 

Question 6:

Fill in the blank with the correct answer:


 

  1. 46
  2. 232
  3. 837
  4. 847

 

Solution:

23 tens 2 ones 

\(\begin{align}​​ &= 230 + 2 \\[2ex] &= 232  \end{align}\)

6 hundreds 15 ones \(= 615\)

\(232 + 615 = 847\)

Answer:

(4) 847


 

Question 7: 

Fill in the blanks with the correct answer:


 

  1. 7
  2. 70
  3. 700
  4. 709

 

Solution:

39 tens 18 ones

\(\begin{align}​​ &= 390 + 18\\[2ex] &= 408  \end{align}\)

27 tens 31 ones

\(\begin{align}​​ &= 270 + 31\\[2ex] &= 301  \end{align}\)

\(408+301=709\)

Answer:

(4) 709


 

Question 8:

What is the missing digit in the box?

  1. 0
  2. 8
  3. 9
  4. 4

 

Solution:

Answer: 

(3) 9


 

Question 9

Kate added two of the numbers below and got the answer 108. Which two numbers did she add?

  1. A and C
  2. A and B
  3. B and C
  4. B and D

 

Solution: 

Let’s calculate the options. 

  1. \(69 + 49 = 118\)
  2. \(69 + 59 = 128\)
  3. \(59 + 49 = 108\)
  4. \(59 + 19 = 78\)

 

Answer: 

(3) B and C


 

Conclusion

In this article, we have learnt Addition and Subtraction:

  • Addition without renaming
  • Addition with renaming


 

Continue Learning
Numbers To 1000 Multiplication And Division 1
Multiplication And Division 2 Addition And Subtraction 1
Addition And Subtraction 2 Fractions 1
Length 1 Mass 1
Volume 1 Money 1
Time 1 Shapes And Patterns
Picture Graphs 1 Model Drawing 1
Model Drawing 4  

 

Academic Topics
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Numbers To 1000
Multiplication And Division 1
Multiplication And Division 2
Addition And Subtraction 1
Addition And Subtraction 2
Fractions 1
Length 1
Mass 1
Volume 1
Money 1
Time 1
Shapes And Patterns
Picture Graphs 1
Model Drawing 1
Model Drawing 4
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