Tham khảo tài liệu 'new sat math workbook episode 1 part 2', ngoại ngữ, ngữ pháp tiếng anh phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Operations with Whole Numbers and Decimals 5 4. DIVISION OF WHOLE NUMBERS The number being divided is called the dividend. The number we are dividing by is called the divisor. The answer to the division is called the quotient. When we divide 18 by 6 18 is the dividend 6 is the divisor and 3 is the quotient. If the quotient is not an integer we have a remainder. The remainder when 20 is divided by 6 is 2 because 6 will divide 18 evenly leaving a remainder of 2. The quotient in this case is 62. Remember that in writing the fractional part of a quotient involving a remainder the remainder becomes the numerator and the divisor the denominator. When dividing by a single-digit divisor no long division procedures are needed. Simply carry the remainder of each step over to the next digit and continue. Example 9 7 2 4 6 5 84 31 42 4 Exercise 4 1. Divide 391 by 23. 3. Find the remainder when 4832 is divided by 15. A 170 A 1 B 16 B 2 C 17 C 3 D 18 D 4 E 180 E 5 2. Divide 49 523 436 by 9. 4. Divide 42 098 by 7. A 5 502 605 A 6014 B 5 502 514 B 6015 C 5 502 604 C 6019 D 5 502 614 D 6011 E 5 502 603 E 6010 5. Which of the following is the quotient of 333 180 and 617 A 541 B 542 C 549 D 540 E 545 6 Chapter 1 5. ADDITION OR SUBTRACTION OF DECIMALS The most important thing to watch for in adding or subtracting decimals is to keep all decimal points underneath one another. The proper placement of the decimal point in the answer will be in line with all the decimal points above. Example Find the sum of .37 and Solution .37 Example From subtract Solution 7 12 1 - In subtraction the upper decimal must have as many decimal places as the lower so we must fill in zeros where needed. Exercise 5 1. From the sum of .65 and 8 subtract 4. From subtract the sum of and . . A A B B C C D D E E 5. Find the difference between 100 and .
