JSS 2 Mathematics (1st, 2nd & 3rd Term)

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ALGERAIC FRACTIONS

ALGERAIC FRACTIONS To add or subtract fractions with different denominators, first change them to equivalent fractions. This is done by finding the L C M of the denominators Example1: Simplify 2a/5 + 4a/3 Solution: The L C M is 15 6a + 20a/ 15 = 26a/15 Example 2: Simplify 3/5x + 1/2x – 1/4x Solution: …

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ALGEBRAIC EXPRESSION

ALGEBRAIC EXPRESSION See also MULTIPLICATION AND DIVISION OF DIRECTED NUMBERS APPROXIMATION AND ESTIMATION ARITHMETIC FRACTIONS HIGHEST COMMON FACTOR AND LOWEST COMMON FACTOR

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APPROXIMATION AND ESTIMATION

APPROXIMATION AND ESTIMATION (SIGNIFCANT AND DECIMAL PLACES) SIGNIFICANT: TO ROUNDOFF A NUMBER CHANGE 0,1,2,3,4 TO 0 WHILE 5,6,7,8,9 TO 1 AND ADD IT TO THE NEXT NUMBER Example 1: round off 492.763 to (a) 3 s.f (b) 3 s.f (c) 2 d.p (d) 4 d.p Solution: (a). 492.763 = 49 (since the third number is …

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FRACTIONS, RATIO AND PERCENTAGES

FRACTIONS (TYPES OF FRACTIONS), RATIO AND PERCENTAGES See also HIGHEST COMMON FACTOR AND LOWEST COMMON FACTOR WHOLE NUMBER AND DECIMALS NUMBERS SIMPLE EQUATIONS INVOLVING FRACTIONS MEASURE OF CENTRAL TENDENCY Data Presentation

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HIGHEST COMMON FACTOR AND LOWEST COMMON FACTOR

HIGHEST COMMON FACTOR AND LOWEST COMMON FACTOR See also WHOLE NUMBER AND DECIMALS NUMBERS SIMPLE EQUATIONS INVOLVING FRACTIONS MEASURE OF CENTRAL TENDENCY Data Presentation CHANGE OF SUBJECT OF A FORMULA

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WHOLE NUMBER AND DECIMALS NUMBERS

WHOLE NUMBER AND DECIMALS NUMBERS See also SIMPLE EQUATIONS INVOLVING FRACTIONS MEASURE OF CENTRAL TENDENCY Data Presentation CHANGE OF SUBJECT OF A FORMULA WORD PROBLEMS

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