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Chapter 3 Worksheet 4 | Integers | Class-6 DAV Secondary Mathematics
Unit 3 Worksheet 4 || Integers
1. Find the sum in two different ways.
(a) — 32, 50 (b) — 81, — 79 (c) 64, — 100 (d) 13, — 78, 15
2. Write the additive inverse of the following:
(a) 31 (b) — 7 (c) 21 (d) — 501 (e) 0 (f) — 34
3. Find the sum using the properties of addition.
(a) 200 + (— 105) + (— 36) (b) (— 45) + 100 + (— 55)
(c) (— 825) + 725 + 100 + (— 100) (d) 927 + (— 517) + (— 518)
(e) (— 215) + (— 215) + 860 + (— 215) + (— 215) + 1 (f) 305 + (— 5) + (— 2) + 2 + (— 200)
(g) 637 + 350 + (— 237) + (— 900) (h) (— 99) + 7 + (— 101) + 93
4. FIll In the following blanks.
5. Write ‘True’ or ‘False’ for the following statements.
(a) 3 + (— 5) is not an Integer.
(b) Sum of two negative integers is also a negative integer.
(c) Negative of — 15 does not exist.
(d) [(— 3) + 8] + (— 4) = [8 + (— 3)1 + (— 4)
(e) 91 + (— 41) = (— 91) + 41
(f) — 46 + 0 = 0
(g) Sum of a positive integer anda negative integer isalways negative.
(h) |—9 — 5| = | — 9| — | 5 |
