Practice the questions given in the worksheet on addition and subtraction using number line. We know, adding a negative number means moving to the left-side on the number line and adding a positive number means moving to the right-side on the number line.

With the help of the below number line add or subtract the following numbers.

**1. Use a number line to evaluate each of the following:**

(i) (+7) + (+5)

(ii) 0 + (+9)

(iii) (+6) + (+3)

(iv) (+1) +
0

(v) (+5) + (+8)

(vi) (+5) + (+3)

(vii) (+8) + 0

(viii) (+3) + (+8)

**2. Evaluate the following using a number
line:**

(i) (-3) + (+7)

(ii) (-2) + (+6)

(iii) (-4) + (+8)

(iv) 0 + (+1)

(v) (-1) + (+5)

(vi) (-5) + (+3)

(vii) (-8) + (+1)

(viii) (-4) + (+9)

(ix) +2 + 7

(x) +4 – 8

(xi) +6 – 7

(xii) +8 – 9

(xiii) -3 + 5

(xiv) -7 – 3

(xv) -2 – 7

**3. Solve the given:**

(i) +13 - 4

(ii) +20 – 12

(iii) -108 + 16

(iv) +40 + 52

(v) -26 + 54

(vi) +12 – 84

(vii) +45 – 51

(viii) -15 - 25

(ix) -93 – 7

(x) -32 – 18

(xi) -39 + 47

(xii) +32 – 68

**4. Add the following using number line:**

(i) (+7) + (-3)

(ii) (+9) + (-1)

(iii) (+4) + (-7)

(iv) (+9) + (-9)

(v) 0 + (-2)

(vi) (+5) + (-3)

(vii) (+3) + (-2)

(viii) (6) + (-9)

**5. Find the sum of the following:**

(i) -2 and 7

(ii) 2, -8 and -4

(iii) -4 and -1

(iv) -5, +3 and -8

(v) -6, +3 and -2

(vi) +9, +5 and -14

**6. Find the sum of the following using
number line:**

(i) (-4) + (-8)

(ii) (-2) + (-7)

(iii) (-1) + (-5)

(iv) (-7) + (-7)

(v) (-8) + (-1)

(vi) (-9) + (-2)

(vii) (-5) + (-4)

(viii) (-6) + (-3)

**7. Using integers find the answers to the given statements.**

(i) What is the distance between the tip of Mount Mickinley and Death Valley?

(ii) Amount of money left after withdrawing $4589 when there was $9000 in the bank?

(iii) The temperature rise 15°c from -4°c.

(iv) Ron made a profit of $800 in 1^{st} week and lost $935 in the 2^{nd} week. What was Ron’s final gain or loss in two weeks?

**8. Subtract the following using number line:**

(i) (+10) - (+3)

(ii) (+9) - (+1)

(iii) (+6) - (-2)

(iv) (+4) – (-2)

(v) (+7) - (-1)

(vi) (-8) – (+5)

(vii) (-9) - (+4)

(viii) (-8) – (+3)

(ix) (+2) - (-1)

(x) (-10) - (-10)

**9. Subtract the following:**

(i) +15 from +10

(ii) -9 from +1

(iii) +27 from -33

(iv) -16 from -20

(v) -8 from -21

(vi) +6 from -12

(vii) -8 from 0

(viii) -3 from -6

**10. Fill in the blanks:**

(i) -16 + ……… = 0

(ii) 28 + ……… = 0

(iii) 45 – 45 = ………

(iv) -3 + ……… = -2

(v) ……… - 6 = -4

(vi) The successor of -9 is ………

(vii) The predecessor of -2 is ………

Answers for the worksheet on addition and subtraction using number line are given below to check the exact answers of the above evaluations.

**Answers:**

**1.** (i) +12

(ii) +9

(iii) +9

(iv) +1

(v) +13

(vi) +8

(vii) +8

(viii) +11

**2.** (i) +4

(ii) +4

(iii) +4

(iv) +1

(v) +4

(vi) -2

(vii) -7

(viii) +5

(ix) +9

(x) -4

(xi) -1

(xii) -1

(xiii) +2

(xiv) -10

(xv) -9

**3.** (i) +9

(ii) +8

(iii) -92

(iv) +92

(v) +28

(vi) -72

(vii) -6

(viii) -40

(ix) -100

(x) -40

(xi) +8

(xii) -36

**4.** (i) +4

(ii) +8

(iii) -3

(iv) 0

(v) -2

(vi) +2

(vii) +1

(viii) -3

**5.** (i) +5

(ii) -10

(iii) -5

(iv) -10

(v) -5

(vi) 0

**6.** (i) -12

(ii) -9

(iii) -6

(iv) -14

(v) -9

(vi) -11

(vii) -9

(viii) -9

**7.** (i) 21752 feet

(ii) $4411

(iii) 19°c

(iv) 135, loss

**8.** (i) +7

(ii) +8

(iii) +8

(iv) +6

(v) +8

(vi) -13

(vii) -13

(viii) -11

(ix) +3

(x) 0

**9.** (i) -5

(ii) 10

(iii) -60

(iv) -4

(v) -13

(vi) -18

(vii) +8

(viii) -3

**10.** (i) 16

(ii) -28

(iii) 0

(iv) 1

(v) +2

(vi) -8

(vii) -3

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