Selina Concise Class 6 Math Chapter 7 Number Line Exercise 7B Solution
EXERCISE 7B
Use a number line to evaluate each of the following:
(1) (i) + 7 + (+ 4) = 7 + 4 = 11
Contents
(ii) 0 + 6 = 6
(iii) + 5 + 0 = 5
(2) (i) (- 4) + (+ 5) = 5 – 4 = 1
(ii) 0 + (- 2) = – 2
(iii) (- 1) + (+ 4) = 4 – 1 = 3
(3) (i) + 4 + (- 2) = 4 – 2 = 2
(ii) + 3 + (- 6) = 3 – 6 = – 3
(iii) 0 + (- 4) = – 4
(4) (i) (- 1) + (- 2) = – 1 – 2 = – 3
(ii) – 3 + (- 4) = – 3 – 4 = – 7
(iii) (- 2) + (- 5) = – 2 – 5 = – 7
(5) (i) (+ 10) – (+ 2) = 10 – 2 = 8
(ii) (+ 8) – (- 5) = 8 + 5 = 13
(iii) (- 6) – (+ 2) = – 6 – 2 = – 8
(iv) (- 7) – (+ 5) = – 7 – 5 = – 12
(v) ( + 4) – (- 2) = 4 + 2 = 6
(vi) (- 8) – (- 4) = – 8 + 4 = – 4