 Study P2 Mathematics Addition and Subtraction 2 - Geniebook   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:

$$68 - 33 = 35$$ 35 books

Question 1:

Fill in the blanks with the correct answer.

$$75 - 21 =$$ __________

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

(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:

$$837 - 315 = 522$$ 522 boys

Question 1:

Fill in the blank with the correct answer:

$$697 - 281 =$$ __________

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

Solution: (1) 416

Question 2:

The difference between 753 and 303 is __________.

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

Solution:

$$753 - 303 = 450$$ (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:

$$100 - 63 = 37​​​​​​​$$ 37 stalks

Question 1:

Fill in the blank with the correct answer:

$$72 - 57 =$$ __________

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

Solution: (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:

$$1000 - 609 = 391$$ 391

Question 1:

Fill in the blank with the correct answer:

$$644 - 589 =$$ __________

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

Solution: (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

(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} (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} (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 (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} (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}

(4) 1000

• Subtraction without renaming
• Subtraction with renaming

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Model Drawing 4  Primary  Primary 1  Primary 2  English  Maths
Numbers To 1000
Multiplication And Division 1
Multiplication And Division 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  Primary 3  Primary 4  Primary 5  Primary 6  Secondary  Secondary 1  Secondary 2  Secondary 3  Secondary 4      