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Grade 7, Operations

Add integers

Add positive and negative numbers from −20 to 20 with the sign rules, two or three at a time.

Three levels

One skill, rising difficulty

Each sheet carries one level. The three are the same skill at rising difficulty, each named for what it practises.

Level 1: From −10 to 10
Add.
Level 2: From −20 to 20
Add.
Level 3: Three numbers
Add.

Worked example

How the sheet explains it

The helper printed at the top of each sheet: one solved example and the steps a student follows, before the first question. Every number sentence in it is proven by the same checker as the answer key.

Level 1: From −10 to 10

−8 + 5 = −3

  1. The size of a number is how far it is from 0: −8 has size 8.
  2. The signs are different, so take the smaller size from the larger: 8 − 5 = 3.
  3. −8 has the larger size, so the answer is negative: −8 + 5 = −3.
  4. Same signs: add the sizes and keep the sign. 4 + 5 = 9, so −4 + (−5) = −9.

Level 2: From −20 to 20

13 + (−18) = −5

  1. The size of a number is how far it is from 0: −18 has size 18.
  2. The signs are different, so take the smaller size from the larger: 18 − 13 = 5.
  3. −18 has the larger size, so the answer is negative: 13 + (−18) = −5.
  4. Same signs: add the sizes and keep the sign. 11 + 4 = 15, so −11 + (−4) = −15.

Level 3: Three numbers

−6 + (−8) + 11 = −3

  1. The size of a number is how far it is from 0: −6 has size 6.
  2. Add from left to right. Same signs: add the sizes and keep the sign. −6 + (−8) = −14.
  3. Then −14 + 11. Different signs: take the smaller size from the larger, 14 − 11 = 3.
  4. −14 has the larger size, so the answer is negative: −6 + (−8) + 11 = −3.

Goes with

Reference sheets

One-page helpers a student keeps beside this sheet:

  • Integers

Every reference, facts and support sheet is listed in the worksheet catalogue.

In the BC curriculum

Content standards

The British Columbia content standard this skill is written for, by the codes used across this site:

  • bc.math.7.c.2

The wording of each standard is on the Province's mathematics curriculum page.

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Back to all worksheets by grade, or read the Grade 7 guide to what this grade learns in British Columbia.