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Numbers and Decimals

Numbers and Decimals

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Basic Arithmetic

Grade 7

Number Line and Comparing Numbers

A number line is a visual tool that represents numbers in order on a straight line. Learn how to use…
Grade 7

Place Value and Rounding Numbers

Place value shows the value of each digit in a number. Round down if the digit is less than 5, and …
Grade 7

Basic Arithmetic and Inverse Operations

Basic arithmetic includes 4 math operations: addition, subtraction, multiplication, and division…
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Factors and Multiples

Grade 7

Divisibility and Divisibility Rules

Learn divisibility rules with clear examples. A number is divisible by 2 if its last digit is even…
Grade 7

Prime Numbers and Prime Factorization

Prime numbers have exactly two factors: 1 and the number itself. Learn prime factorization to find…
Grade 8

How to Find HCF and LCM

Highest Common Factor (HCF) is the greatest factor shared by numbers, and Lowest Common Multiple…

Powers and Roots

Grade 7

Powers and Indices

Learn powers and indices, like 5³, where 5 is the base and 3 is the index or exponent. Discover…
Grade 11

Basics of Square Roots

The square root of a number is a non-negative value that, when squared, equals the number that…
Grade 11

Multiplying and Dividing Square Roots

Learn the formulas for multiplying and dividing square roots and how to use them to simplify root…
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Decimals

Grade 8

Decimals and Fractions

Decimals are numbers with a whole part and a fractional part separated by a decimal point. Learn to …
Grade 8

Comparing and Rounding Decimals

Rounding decimals is easy—check the digit to the right of your target place: round up if 5 or more, …
Grade 8

Movement of the Decimal Point

When multiplying decimals by 10, 100, or 1000, move the decimal point 1, 2, or 3 places to the right…
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Negative Numbers

Grade 9

Rational Numbers and their location on a Number Line

What are rational numbers, their difference from irrational numbers, and how to represent them on a…
Grade 9

Adding and Subtracting Negative Numbers

Add and subtract negative numbers using a number line and rules for removing brackets when working…
Grade 9

Multiplying and Dividing Negative Numbers

Multiply and divide negative numbers using sign rules. Learn how an odd or even number of negatives …

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Basic Arithmetic
Factors and Multiples
Powers and Roots
Decimals
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