We will solve the different types of problems involving addition and subtraction together.
To show the problem involving both addition and subtraction, we first group all the numbers with ‘+’ and ‘-‘ signs. We find the sum of the numbers with ‘+’ sign and similarly the sum of all the numbers with ‘-‘ sign and then find the difference.
1. Solve 3811 + 4629 – 1821 – 3164
Solution:
Step I: Add the numbers with ‘+’ sign. Step II: Add the numbers with ‘-’ sign. Step III: Subtract the sum of the numbers with ‘-’ sign from the sum of the numbers with ‘+’ sign. |
Note: If there is no sign before a number it means ‘+’ sign.
Answer: 3811 + 4629 - 1821 - 3164 = 3455
Questions and Answers on Addition and Subtraction Together:
I. Solve the following:
(i) 5406 + 1809 – 3281
(ii) 2805 + 4961 – 1629 - 128
(iii) 3619 + 5410 – 2018 – 3110
(iv) 1529 + 402 + 506 – 1200
Answer:
(i) 3934
(ii) 6009
(iii) 3901
(iv) 1237
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