Addition and Subtraction Together
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:
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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.
|
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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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