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:

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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