Math Assignment Class VIII | Square & Square Root

Basic concepts, definitions and formulas of mathematics, mathematics assignments for 9th standard to 10+2 standard, maths study material for 8th, 9th, 10th, 11th, 12th classes, Mathematics lesson plan for 10th and 12th standard, Interesting maths riddles and maths magic, Class-wise mathematics study material for students from 9th to 12
BEFORE START NCERT CHAPTER 1 CLASS IX, STUDENTS SHOULD LEARN
THE FOLLOWINGS
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METHOD OF FINDING RATIONAL NUMBERS BETWEEN GIVEN TWO NUMBERS. Let
two numbers are 2 and 3
LCM of 3 and 5 is = 15 |
METHOD OF CONVERTING RATIONAL DECIMALS INTO RATIONAL NUMBER Example 1 Multiplying on both side by 10 we get 10x = 10 X 2.444 10x = 24.444 .......... (2) From Eqn. (2) - eqn. (1) 9x = 22 ⇒ x = 22/9
Example 2 \[ Let\: given\: number\: is=\: 2.\overline{45}\] \[Let\: x=2.\overline{4}=2.454545\: \: ....\: \: (1)\] Multiplying on both side by 100 we get 100x = 100 X 2.4545 ........... 100x = 245.4545 .......... (2) From Eqn. (2) - eqn. (1) 99x = 243 ⇒ x = 243/99
Example 3 \[ Let\: given\: number\: is=\: 2.\overline{456}\] \[Let\: x=2.\overline{4}=2.456456\: \: ....\: \: (1)\] Multiplying on both side by 1000 we get 1000x = 1000 X 2.456456
........... 1000x = 2456.456456 .......... (2) From Eqn. (2) - eqn. (1) 999x = 2454 ⇒ x = 2454/999
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METHOD OF WRITING RATIONAL AND IRRATIONAL NUMBERS BETWEEN GIVEN TWO
RATIONAL NUMBERS Algorithm 2) Write the rational numbers between the given two numbers in the decimal form. 3) Convert the given rational numbers into irrationals by placing increasing order of number of zeroes between the digits. Let given numbers are
Irrational numbers between \[ 0.72,\: \:0.73,\: \: 0.75,\: \:0.76\: \: etc \] Irrational numbers between |
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