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Question
Using the number line find the integer in the following cases : [3 MARKS]
(a) Sum of 5 and −3
(b) 5 less than 3
(c) 4 more than −1
Using the number line find the integer in the following cases : [3 MARKS]
(a) Sum of 5 and −3
(b) 5 less than 3
(c) 4 more than −1
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Solution
Each option: 1 Mark
(a) We first move to the right of 0 by 5 steps reaching 5. Then we move 3 steps to the left of 5 reaching 2.
We get, (+5)+(−3)=2
(b) We want to know an integer which is 5 less than 3 for that we need to start from 3 and move to the left by 5 steps and obtain –2 as shown below:
(c) We want to know the integer which is 4 more than –1. So, we start from –1 and proceed 4 steps to the right of –1 to reach 3 as shown below:
Each option: 1 Mark
(a) We first move to the right of 0 by 5 steps reaching 5. Then we move 3 steps to the left of 5 reaching 2.
We get, (+5)+(−3)=2
(b) We want to know an integer which is 5 less than 3 for that we need to start from 3 and move to the left by 5 steps and obtain –2 as shown below:
(c) We want to know the integer which is 4 more than –1. So, we start from –1 and proceed 4 steps to the right of –1 to reach 3 as shown below:
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