Study P2 Mathematics Addition and Subtraction 2 - Geniebook

Addition And Subtraction 2

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

  1. Subtraction without renaming
  2. Subtraction with renaming
     

Topic Recap: 

Subtraction Within 100 Without Renaming

 

Example: 

Ricky has 68 books. He donated 33 books. How many books did he have left?

Solution:

\(68 - 33 = 35 \)

Answer:

35 books


 

Question 1:

Fill in the blanks with the correct answer.

\(75 - 21 =\) __________

 

  1. 44
  2. 54
  3. 56
  4. 96                                                                             

 

Answer:

(2) 54


                                                                 

1. Subtraction Without Renaming

 

Example: 

There are 837 students staying in a school hostel. 315 of them are girls. How many boys are there staying in the school hostel?

 

Solution:

\(837 - 315 = 522\)

Answer:

522 boys


 

Question 1:

Fill in the blank with the correct answer:

\(697 - 281 =\) __________

 

  1. 416
  2. 418
  3. 466
  4. 479

 

Solution:

Answer:

(1) 416


 

Question 2: 

The difference between 753 and 303 is __________.

 

  1. 450
  2. 453
  3. 550
  4. 553

 

Solution:

\(753 - 303 = 450\)

Answer:

(1) 450


 

Topic Recap:

Subtraction Within 100 With Renaming

 

Example: 

A florist had 100 stalks of flowers. She sold 63 stalks of flowers. How many stalks of flowers is she left with?                          

 

Solution:                  

\(100 - 63 = 37​​​​​​​  \)                                                                                                                       

Answer:

37 stalks


 

Question 1: 

Fill in the blank with the correct answer:

\(72 - 57 =\) __________

 

  1. 14
  2. 15               
  3. 24
  4. 25

 

Solution:

 

Answer:

(2) 15


 

2. Subtraction Within 1000 With Renaming

 

Example: 

A factory had to manufacture 1000 toys in 2 days. On the first day, 609 toys were manufactured. How many toys were manufactured on the second day?

 

Solution: 

\(1000 - 609 = 391\)

Answer:

391


 

Question 1:

Fill in the blank with the correct answer:

\(644 - 589 =\) __________

 

  1. 55
  2. 65
  3. 145
  4. 155

 

Solution:

Answer:

(1) 55


 

Question 2: 

Fill in the blank with the correct answer:

\(788 - 298 =\) __________ tens

 

  1. 49
  2. 51
  3. 490
  4. 510

 

Solution:

\(788 - 298 = 490\)

\(490 = 49\) tens

Answer:

(1) 49


 

Question 3: 

Fill in the blank with the correct answer:

\(10\) hundreds \(- \;45\) tens \(=\) __________

 

  1. 35
  2. 55
  3. 350
  4. 550

 

Solution:

\(10\) hundreds \(- \;45\) tens

\(\begin{align}​​ &= 1000 - 450 \\[2ex] &= 550 \end{align}\)

Answer:

(4) 550


 

Question 4: 

Subtract 27 tens from 702.

 

  1. 342
  2. 432
  3. 675
  4. 702

 

Solution:

\(702 - 27\) tens

\(\begin{align}​​ &= 702 - 270\\[2ex] &= 432 \end{align}\)

Answer:

(2) 432


 

Question 5:

Fill in the missing digit below:

 

  1. 5
  2. 2
  3. 6
  4. 4

 

Solution: 

In the tens place, 8 tens cannot be subtracted from 2 tens. Therefore, we will have to regroup.

So, 1 hundred 2 tens \(=\) 12 tens.

12 tens - 8 tens \(=\) 4 tens

In the hundreds place, by working backward, 

3 hundreds \(+\) 1 hundred \(=\) 4 hundreds

4 hundreds \(+\) 1 hundred \(=\) 5 hundreds

Answer:

(1) 5


 

Question 6:

Look at the digits below. Use the digits to make the greatest and the smallest 3-digit numbers. What is the difference between the two numbers formed?


 

  1. 396
  2. 404
  3. 406
  4. 496

 

Solution:

The greatest 3-digit number that can be formed is 975. 

The smallest 3-digit number that can be formed is 579. 

Difference between the numbers

\(\begin{align}​​ &= 975 −  579\\[2ex] &= 396 \end{align}\)

Answer:

(1) 396


 

Question 7:

What is the value of              ?


 

  1. 412
  2. 900
  3. 910
  4. 1000

 

Solution:

Value of the 

\(\begin{align}​​ &= 493 - 199\\[2ex]  &= 294 \end{align}\)

Value of the 

\(\begin{align}​​ &= 294 + 706\\[2ex] &= 1000   \end{align} \)

Answer:

(4) 1000


 

In this article, we have learnt Addition and Subtraction:

  • Subtraction without renaming
  • Subtraction 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  

 

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