Addition and Subtraction of Whole Numbers for Primary 4
Adding four-digit numbers joins place values in columns; subtraction finds the difference. Regrouping is used when a column…
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Primary 4
241 lessonsExplore all lessons
AMathematicsBASIC OPERATIONS
8
BASIC OPERATIONS
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Addition and Subtraction of Fractions and Mixed Numbers for Primary 4
Fractions with the same denominator can be added or subtracted by combining their numerators. Mixed numbers may need…
Addition and Subtraction of Decimals for Primary 4
Decimal numbers use a point to separate whole units from tenths and hundredths. Keeping decimal points aligned helps…
Multiplication of Whole Numbers, Fractions and Decimals for Primary 4
Multiplication combines equal groups efficiently. Whole numbers, fractions and decimals follow related rules, but place value affects the…
Squares and Square Roots of Numbers for Primary 4
Squaring a number means multiplying it by itself: 6 × 6 = 36. The square root reverses the…
Division of Whole Numbers with and without Remainders for Primary 4
Division shares a quantity equally or divides it into equal groups. A remainder is the amount left when…
Rounding Numbers and Estimating Sums, Products and Measurements for Primary 4
Rounding replaces a number with a nearby simpler value. Estimates of costs, distances or calculations help check whether…
Meaning of Open Sentences and Finding Missing Numbers for Primary 4
An open sentence becomes true when the missing number is replaced with the correct value. A box or…
BMathematicsMENSURATION
4
MENSURATION
Addition and Subtraction of Money for Primary 4
Naira and kobo amounts can be added to find total costs or subtracted to find change. Correct placement…
Multiplication, Division, Profit and Loss with Money for Primary 4
Multiplying prices finds the cost of several identical items; division finds a unit price. Selling above cost brings…
Estimating, Measuring, Adding and Subtracting Length for Primary 4
Length is measured in units such as metres and centimetres. Converting to the same unit allows distances to…
Operations and Measurements with Weight in Kilograms and Grams for Primary 4
Kilograms and grams measure the mass of everyday objects, from bags of rice to small parcels. One kilogram…