Final Cover - For Printing
d) What have you done in the previous step? Instead of adding 3, you have added Therefore, the excess 2 must be subtracted. Cle ...
IV. ADDITION OF MULTIPLE DIGIT NUMBERS : Example : 987 + 444 a) Set the number 987 in the extreme right of the abacus. b) We are ...
ABACUS – SUBTRACTION The rules followed in abacus addition are applicable in subtraction too. The highest digit in the smaller n ...
e) With the help of your left hand, clear one bead in the tens column. That is, you have cleared 10 instead of 9. f) To compensa ...
Module – 8 ABACUS - MULTIPLICATION I. GENERAL RULES : a) The finger and hand positions are to be followed as in the case of addi ...
h) The highest digit of the multiplier and the lowest digit of the multiplicand should be multiplied first. i) When multiplicati ...
EXERCISE 1) 8 5 9 2) 5 5 8 3) 4 5 9 4) 6 5 5 5) 2 5 8 6) 3 5 5 7) 8 5 4 8) 9 5 7 9) 4 5 3 10) 7 5 6 ...
Module – 9 ABACUS - MULTIPLICATION OF TWO DIGIT NUMBERS Example : 38 5 29 a) Set the multiplier 38 in the extreme left. b) Count ...
g) Multiply 2 5 8 = 16. Set the number 1 in the hundreds column. But there is no bead to add in the hundreds column. So, set one ...
Module – 10 ABACUS - MULTIPLICATION INVOLVING ZERO Example : 405 x 307 a) Set the multiplier 405 in the extreme left. b) For set ...
h) Clear the 3 of the multiplicand and the multiplier 405. The answer is 124335. EXERCISE 1) 304 5 408 2) 708 5 601 3) 741 5 509 ...
ABACUS - DIVISION I. GENERAL RULES : a) Three terms - divisor, dividend and the quotient are used in a division problem. The num ...
f) When the setting of the dividend and the quotient are correct, the remainder of the division problem, if any, will appear in ...
immediate right of the already set quotient 23. Now subtract 32 from the dividend. There is no remainder left. g) Now you are le ...
EXERCISE 1) 756 ÷ 4 2) 575 ÷ 5 3) 625 ÷ 6 4) 838 ÷ 2 5) 9098 ÷ 3 6) 674 ÷ 4 7) 238 ÷ 3 8) 839 ÷ 7 9) 1329 ÷ 9 10) 3612 ÷ 4 ...
Module – 12 ABACUS - LONG DIVISION Example : 3588 ÷ 46 a) Set the divisor 46 in the extreme left of the abacus. Note that the di ...
f) Now multiply 7 with 4 of the divisor 46. 7 5 4 = 28. By saying this, subtract 28 from the 35 of the 358. Now you are left wit ...
EXERCISE 1) 650 ÷ 25 2) 9250 ÷ 50 3) 6868 ÷ 68 4) 1748 ÷ 38 5) 8832 ÷ 92 6) 9016 ÷ 98 7) 2756 ÷ 53 8) 6006 ÷ 77 9) 8649 ÷ 93 10) ...
ABACUS DIVISION - QUOTIENT AND REMAINDER Example : 4988 ÷ 28 a) Set the divisor 28 at the extreme left of the abacus. b) Set the ...
whether or not the first two digits are smaller than the first two digits of the dividend. If the divisor is bigger, do not leav ...
«
1
2
3
4
5
6
7
8
9
10
»
Free download pdf