Addition And Subtraction 2
In this article, we will learn about Addition and Subtraction. The learning objectives are:
- Subtraction without renaming
- 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.
\(75 - 21 =\) __________
- 44
- 54
- 56
- 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:
\(697 - 281 =\) __________
- 416
- 418
- 466
- 479
Solution:
Answer:
(1) 416
Question 2:
The difference between 753 and 303 is __________.
- 450
- 453
- 550
- 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:
\(72 - 57 =\) __________
- 14
- 15
- 24
- 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:
\(644 - 589 =\) __________
- 55
- 65
- 145
- 155
Solution:
Answer:
(1) 55
Question 2:
Fill in the blank with the correct answer:
\(788 - 298 =\) __________ tens
- 49
- 51
- 490
- 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 \(=\) __________
- 35
- 55
- 350
- 550
Solution:
\(10\) hundreds \(- \;45\) tens
\(\begin{align} &= 1000 - 450 \\[2ex] &= 550 \end{align}\)
Answer:
(4) 550
Question 4:
Subtract 27 tens from 702.
- 342
- 432
- 675
- 702
Solution:
\(702 - 27\) tens
\(\begin{align} &= 702 - 270\\[2ex] &= 432 \end{align}\)
Answer:
(2) 432
Question 5:
Fill in the missing digit below:
- 5
- 2
- 6
- 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?
- 396
- 404
- 406
- 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 ?
- 412
- 900
- 910
- 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 |