Addition And Subtraction
The symbol which represents addition is '\(+\)' and the symbol which represents subtraction is '\(-\)'.
In this article, the learning objectives are:
- Addition and Subtraction (Direct)
- Addition and Subtraction (Indirect)
- More than/Less than (Direct)
- More than/Less than (Indirect)
1. Addition And Subtraction (Direct)
In Primary 3, we will learn about addition and subtraction of numbers up to 4-digits.
Question 1:
Do the following.
\(1785 + 3162 =\text{__________}\)
Solution:
Answer:
4947
Question 2:
Do the following.
\(4360 + 4723 =\text{__________}\)
Solution:
Answer:
9083
Question 3:
Do the following.
\(3740 + 6231 =\text{__________}\)
Solution:
Answer:
9971
Question 4:
Do the following.
The sum of 1654 and 323 is __________.
- 1331
- 1977
- 1986
- 4884
Solution:
Sum means ‘\(+\)’.
Answer:
(2) 1977
Question 5:
Do the following.
\(9017 - 901 =\text{__________}\)
Solution:
Answer:
8116
Question 6:
Do the following.
\(9800 - 136 =\text{__________}\)
- 9664
- 9736
- 9764
- 9936
Solution:
Answer:
(1) 9664
Question 7:
Do the following.
The difference between 8080 and 606 is __________.
- 2020
- 7374
- 7474
- 8686
Solution:
Difference means ‘\(-\)’.
Answer:
7474
2. Addition And Subtraction (Indirect)
In addition and subtraction (Indirect), we need to read the questions carefully as seeing ‘\(+\)’ in the questions may not necessarily mean add and ‘\(-\)’ in the questions may not necessarily mean subtract.
Question 1:
\(1460 + \text{__________} = 5000 \)
Solution:
Answer:
3540
Question 2:
Do the following.
\(2745 + \text{__________} = 3429\)
Solution:
Answer:
684
Question 3:
Do the following.
\(5273 + \text{__________} = 6000\)
Solution:
Answer:
727
Question 4:
Do the following.
\(3210 = 912 + \text{__________}\)
- 1298
- 2298
- 3708
- 4122
Solution:
Answer:
(2) 2298
Question 5:
Do the following.
\(7000 - \text{__________} = 2999\)
Solution:
Answer:
4001
Question 6:
Do the following.
\(\text{__________} - 3285 = 1076\)
Solution:
Answer:
4361
Question 7:
Do the following.
\(2540 - \text{__________} = 1210\)
Solution:
Answer:
1330
Question 8:
Do the following.
\(\text{__________} - 124 = 5240\)
- 5026
- 5116
- 5124
- 5364
Solution:
Answer:
(4) 5364
Question 9:
What are the values of A and B?
- \(A = 4, B = 7\)
- \(A = 3, B = 8\)
- \(A = 4, B = 8\)
- \(A = 3, B = 7\)
Solution:
Starting from the ones, we add 9 and 8 to get 17.
\(\begin{align} A &= 8 - 4 - 1\\[2ex] &= 3\\[4ex] B &= 4 + 3 + 1\\[2ex] &= 8 \end{align}\)
Answer:
(2) \(A = 3, B = 8\)
3. More Than/Less Than (Direct)
In more than/less than (Direct) questions, we do addition when we see the term more than and we do subtraction when we see the term less than.
Question 1:
1000 more than 3450 is __________.
Solution:
Rewriting this as an equation:
\(3450 + 1000 = 4450\)
Answer:
4450
Question 2:
Do the following.
2000 more than 3465 is __________.
Solution:
Rewriting this as an equation:
\(2000 + 3456 = \text{__________}\)
Answer:
5465
Question 3:
Do the following.
150 more than 5915 is __________.
Solution:
Rewriting this as an equation:
\(5915 + 150 = \text{__________}\)
Answer:
6065
Question 4:
Do the following.
__________ is 1213 more than 4897.
- 3648
- 3684
- 6011
- 6110
Solution:
Rewriting this as an equation:
\(\text{__________}= 1213 + 4897\)
Answer:
(4) 6110
Question 5:
Do the following.
100 less than 2083 is __________.
Solution:
Rewriting this as an equation:
\(2083 - 100 =\text{__________}\)
Answer:
1983
Question 6:
Do the following.
10 less than 4753 is __________.
- 4653
- 4743
- 4763
- 4853
Solution:
Rewriting this as an equation:
\(4753 - 10 =\text{__________}\)
Answer:
(2) 4743
Question 7:
Do the following.
__________ is 250 less than 5620.
- 5970
- 5870
- 5470
- 5370
Solution:
Rewriting this as an equation:
\(\text{__________} = 5620 - 250 \)
Answer:
(4) 5370
4. More Than / Less Than (Indirect)
In more than/less than (Indirect), we do subtraction when we see the term more than. However we have to read the question carefully when we see the term less than.
It can be addition or subtraction, depending on how the question is phrased.
Question 1:
__________ more than 2000 is 6500.
Solution:
Rewriting this as an equation:
\(2000 + \text{__________} = 6500 \)
\(6500 - 2000 = 4500\)
Answer:
4500
Question 2:
Do the following.
__________ more than 2999 is 3455.
Solution:
Rewriting this as an equation:
\(2999 +\text{__________}= 3455\)
\(3455 - 2999 = 456\)
Answer:
456
Question 3:
Do the following.
__________ more than 6835 is 8835.
- 1000
- 2000
- 2600
- 15 670
Solution:
Rewriting this as an equation:
\(6835 + \text{__________} = 8835\)
\(8835 - 6835 = 2000\)
Answer:
(2) 2000
Question 4:
Do the following.
300 more than __________ is 5437.
- 5137
- 5237
- 5637
- 5737
Solution:
Rewriting this as an equation:
\(\text{__________} + 300 = 5437\)
\(5437 - 300 = 5137\)
Answer:
(1) 5137
Question 5:
Do the following:
153 less than __________ is 2846.
Solution:
Rewriting this as an equation:
\(\text{__________} - 153 = 2846\)
\(2846 + 153 = 2999\)
Answer:
2999
Question 6:
Do the following.
__________ less than 4657 is 4357.
Solution:
Rewriting this as an equation:
\(4657 - \text{__________} = 4357\)
\(4657 - 4357 = 300\)
Answer:
300
Question 7:
Do the following.
__________ less than 7100 is 7070.
- 30
- 130
- 1480
- 14 170
Solution:
\(7100 - \text{__________} = 7070\)
\(7100 - 7070 = 30\)
Answer:
(1) 30
Question 8:
What is the missing number?
5440 is __________ tens more than 4840.
- 6
- 60
- 66
- 600
Solution:
Rewriting this as an equation:
\(5440 = 4840 + \text{__________}\)
\(\begin{align} 5440 - 4840 &= 600\\[2ex] 600 &= 60 \text{ tens} \end{align}\)
Answer:
(2) 60
Continue Learning | |
---|---|
Volume | Money |
Mass | Fractions |
Addition And Subtraction | Whole Numbers 1 |
Whole Numbers 3 | Whole Numbers 6 |
Bar Graphs | Angles |
Multiplication and Division | Length, Mass And Volume |
Length | Area and Perimeter |
Parallel And Perpendicular Lines |