Selina solutions concise mathematics class 6 icse Solutions for Chapter 6 negative numbers and integers

Exercises in Chapter 6 negative numbers and integers Grade 6

Exercise 6

Questions in Exercise 6

If 3 > -2, then 3 is on the ………….. side of -2 on the number line.

Negative of 8 is ………..

If -8 < -6, then -8 is on the …………. side of -6 on the number line.

A decrease in temperature from 15 ℃ to 10 ℃ can be represented as ______.

If going south is negative then going north is …………

Use appropriate sign.

Since 5 < 7, therefore -5 ……….. -7.

If 10 represents a gain of ₹ 10, then -10 represents a ………….. of ₹ 10 .

Q1)Fill in the blanks :

(i) Negative of -20 is ……….

(ii) Negative of 0 is …………

(iii) Negative of 8 is ………..

(iv) If 10 represents gain of ₹ 10, then -10 represents …………..

(v) If going south is negative then going north is …………

(vi) Because 5 < 7, therefore -5 ……….. -7.

(vii) If 3 > -2, then 3 is on the ………….. of -2.

(viii) If -8 < -6, then -8 is on the …………. of-6.

The difference in temperature 30 ℃ to 55 ℃ can be represented as ______.

Which of the following statements are correct?

Statement I: Decrease in cost by Rs. 10 is expressed as 10

Statement II: Increase in cost by Rs. 10 is expressed as -10

Newton saw an apple fall from a height of 8 m on the ground. What is the current position of the apple from the ground level?

Ramanujan throws a pebble into a river of depth 50 m from a hill of height 10 m. What is the current position of the pebble from the ground if it has reached the bottom of the river?

Negative of -20 is ……….

Negative of 0 is …………

Q2)Use a number line to write the following integers in ascending (increasing) order :

(i) -5, 8, 0, -9, 4, -14 and 12

(ii) -6, 7, 0, -9, 5 and 9

The following number line shows integers -5, 8, 0, -9, 4, -14 and 12 in ascending (increasing) order.

Is it true or false?

The following number line integers -6, 7, 0, -9, 5 and 9 in ascending order.

The following number line shows integers -4, 3, -8, -12, -7 and 6 in descending order.

Q3)Use a number line to write the following integers in descending (decreasing) order :

(i) -10, 0, 3, -4, 12, 11, -1 and 5

(ii) -4, 3, -8, -12, -7 and 6.

The following number line shows the integers -10, 0, 3, -4, 12, 11, -1 and 5 in descending (decreasing) order.

13 + 15 = ____ .

Q4)Add:

(i) 13 and 15

(ii) -13 and 15

(iii) 13 and -15

(iv) -13 and -15

-13 + 15 = ___ .

(-13) +(-15) = ___

13 +(-15) = ____ .

Add:

257 and -254

Add:

258 and -473

Add:

-623 and 326

Q5)Add:

(i) 259 and 214

(ii) -528 and -243

(iii) -623 and 326

(iv) 258 and -473

(v) -622 and -254

(vi) 257 and -254

Add:

-622 and -254

Add:

-528 and -243

Add:

259 and 214

Subtract :

-8 from -2

Subtract:

-6 from -3

Subtract :

5 from 8

Subtract :

4 from -7

Subtract :

-5 from 8

Subtract:

-3 from 12

Q6)Subtract :

(i) 5 from 8

(ii) -5 from 8

(iii) 4 from -7

(iv) -8 from -2

(v) -3 from 12

(vi) -6 from -3

Q7)Subtract:

(i) -123 from 453

(ii) -78 from -12

(iii) 329 from -124

(iv) -222 from 0

Subtract:

-78 from -12

Subtract:

-123 from 453

Subtract:

329 from -124

Subtract:

-222 from 0

What will be 5 less than 2 using a number line?

What will be 7 less than -8 using a number line?

What will be 5 more than -9 using a number line?

What will be 7 more than 0 using a number line?

What will be 3 more than -1 using number line?

What will be 4 less than -4 using a number line?

Q8)Using a number line, find the integer which is :

(i) 3 more than -1

(ii) 5 less than 2

(iii) 5 more than -9

(iv) 4 less than -4

(v) 7 more than 0

(vi) 7 less than -8

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Chapters in this book

Number System (Consolidating the Sense of Numberness)

Estimation

Numbers in India and International System (With Comparison)

Place Value

Natural Numbers and Whole Numbers (Including Patterns)

Negative Numbers and Integers

Number Line

HCF and LCM

Playing with Numbers

Sets

Ratio

Proportion (Including Word Problems)

Unitary Method

Fractions

Decimal Fractions

Percent (Percentage)

Idea of Speed, Distance and Time

Fundamental Concepts (Algebra)

Fundamental Operations (Related to Algebraic Expressions)

Substitution (Including Use of Brackets as Grouping Symbols)

Framing Algebraic Expressions (Including Evaluation)

Simple (Linear) Equations (Including Word Problems)

Fundamental Concepts (Geometry)

Angles (With their Types)

Properties of Angles and Lines (Including Parallel Lines)

Triangles (Including Types, Properties and Construction)

Quadrilateral

Polygons

The Circle

Revision Exercise on Symmetry (Including Constructions on Symmetry)

Recognition of Solids

Perimeter and Area of Plane Figures

Data Handling (Including Pictograph and Bar Graph)

Mean and Median