Mathematics (Primary Classes)

WEIGHT

Post Views: 1 The units used for measuring weight are kilogram (kg) and gram (g). 1000 gram = 1kg 1000kg = 1 ton   EXAMPLE1 Change to kilogram 2000g to… Read More »WEIGHT

VOLUME OF CYLINDER

Post Views: 0 Volume of cylinder = πr2h = π x r x r x h   EXAMPLE Find the volume of a cylinder of radius 3 ½ cm and… Read More »VOLUME OF CYLINDER

AREA OF RIGHT ANGLED TRIANGLE

Post Views: 0 A right-angled triangle has 3 – sides Example 1 Calculate the area of a triangle of height 12cm and base 13cm Solution Area of triangle = ½… Read More »AREA OF RIGHT ANGLED TRIANGLE

PROFIT AND LOSS PERCENT

Post Views: 0 Profit or loss percent is expressed as a percentage of the cost price EXAMPLE 1 An article bought for \$3,000 was sold for \$3,300. Find the profit… Read More »PROFIT AND LOSS PERCENT

SIMPLE INTERREST

Post Views: 0 Meaning of interest: interest means the extra money that you [ay back when ypu borrow money that you receive when you invest money. EXAMPLE 1 find the… Read More »SIMPLE INTERREST

MONEY: PROFIT AND LOSS

Post Views: 0 MEANING OF PROFIT When the selling price of an article is higher or greater than the cost price, we have a profit or gain. Profit = selling… Read More »MONEY: PROFIT AND LOSS

SIMPLE PROBLEMS ON PERCENTAGES

Post Views: 0 Percentages are fractions with 100 as denominator EXAMPLE 1 Change the following fractions to percentages 2/5 =  2/5 of 100 = 2/5  ×  100 = 200  =… Read More »SIMPLE PROBLEMS ON PERCENTAGES

RATIO AND PERCENTAGE

Post Views: 1 Meaning of Ratio The relation between two quantities (both of the same units) obtained by dividing one quantity with another is called ratio. Ratio can be denoted… Read More »RATIO AND PERCENTAGE

PROFIT AND LOSS

Post Views: 1 Example 1 A man bought a leather bag for N350.00 and sold it for N360.00 will he have more money or less money with him? Solution Selling… Read More »PROFIT AND LOSS

PROBLEM ON MULTIPLICATION OF MONEY

Post Views: 2 EXAMPLE Find the cost of 3 books at N91.55 each. Solution N91. 55 ×         3 N274.65   EXERCISE 52 x 4 75 x 6 75 x 6… Read More »PROBLEM ON MULTIPLICATION OF MONEY

Money

Post Views: 9 Addition of Money Example: find the sum of N4.36, N3.79 and N4.82 N   K 4    36 +  3. 7 9 +  4. 8 2    12.… Read More »Money

ESTIMATION

Post Views: 1 Rounding off decimals to the nearest whole number Rules for rounding off decimals to the nearest whole number When the rounding off decimals to the nearest whole… Read More »ESTIMATION

HIGHEST COMMON FACTOR (HCF)

Post Views: 2 The product of 2 and 3 is; 2 x 3 = 6 2 and 3 are factors of 6 The factors of a number are numbers that… Read More »HIGHEST COMMON FACTOR (HCF)

LEAST COMMON MULTIPLES (LCM)

Post Views: 2 Example 1: Find the least common multiples of 2 and 3 The multiples of 2 are: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22,… Read More »LEAST COMMON MULTIPLES (LCM)

MULTIPLICATION OF NUMBERS

Post Views: 0 MULTIPLICATION OF NUMBERS BY 2-DIGIT NUMBERS Example 1 multiply 25 by 12 Method 1: column form                                                  method 2: Expanded form 2    5                                                                25 x 12 =… Read More »MULTIPLICATION OF NUMBERS