Maths ·Class 6 Maths

Evaluate 15 - 5, 100 - 10 and 74 - 34 from this perspective. Class 6

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· Jul 01, 2026 · Reviewed & updated Sep 17, 2026 · 1 min read

Question 1.

Solution:

15 - 5 = ? is the same as 5 + ? = 15.

This gives us ? = 10. Hence, 15 - 5 = 10.

100 - 10 = ? is the same as 10 + ? = 100.

This gives us ? = 90. So, 100 - 10 = 90.

74 - 34 = ? is the same as 34 + ? = 74.

This gives ? = 40. So, 74 - 34 = 40.

Question 2.

Complete these expressions. You may think of them as finding the movement needed to reach the Target Floor from the Starting Floor. Class 6

(a) (+ 1) - (+ 4) = _____

(b) (0) - (+ 2) = _______

(d) (0) - (- 2) = _____

(e) (+ 4) - (- 3) = _____

(f) (- 4) - (- 3) = _____

(g) (- 1) - (+ 2) = _______

(h) (- 2) - (-2) = ______

(i) (- 1) - (+1) = _____

(j) (+ 3) - (- 3) = _____

Solution:

(a) (+ 1) - (+ 4) = -3

(b) (0) - (+ 2) = -2

(d) (0) - (- 2) = +2

(e) (+ 4) - (- 3) = +7

(f) (- 4) - (- 3) = -1

(g) (- 1) - (+ 2) = -3

(h) (- 2) - (-2) = 0

(i) (- 1) - (+1) = -2

(j) (+ 3) - (- 3) = +6