Maths exercises
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This document discusses place value, rounding numbers, and calculations with whole numbers. It provides examples of rounding 437 to the nearest ten and 432 to the nearest ten. It also discusses order of operations for calculations. The document then provides 10 questions about whole numbers, including calculating values, rounding, and evaluating expressions. It also discusses number patterns and sequences, including odd/even numbers, prime numbers, least common multiples, and highest common factors. It provides 10 additional questions involving number patterns and sequences.
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This document contains several math puzzles and tricks with their solutions. It includes puzzles involving dividing a number into parts in a specific ratio, identifying a unique number, calculating correct and incorrect answers on a test, determining a date based on age information, inserting an operator to make an equation correct, using only zeros and operators to get a target number, and continuing a number pattern. Solutions are provided for each puzzle. Additionally, the document discusses Roman numerals and their values and relationships.
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Maths exercises
- 1. CHAPTER 1 :WHOLE NUMBERS1. PLACE VALUEEXAMPLE: 3,468,279 PLACE VALUE VALUE OF DIGIT ONES 9TENS 70HUNDREDS 200THOUSANDS 8 000TENTHOUSANDS 60 000HUNDRED THOUS ANDS 400 000MILLIONS 3 000000 2.Rounding Off 0 1 2 3 4 5 6 7 8 90 +1EXAMPLE : 4 3 7 to the nearest ten. (Observe the digit to the right ofthe digit to berounded off)ANSWER : 440EXAMPLE : 4 3 2 to the nearest ten. (Observe the digit to the right ofthe digit to berounded off)ANSWER : 4303.Calculation Whole Number(a) First- Carry out calculation in bracket(b) Second- Carry out × or ÷ from the left(c) Third - Carry outor + − from the left PLACE VALUE VALUE OF DIGIT ONES 9TENS 70HUNDREDS 200THOUSANDS 8 000TEN THOUSANDS 60 000HUNDRED THOUSANDS 400 000MILLIONS 3 000
- 3. Question of Whole Number 1.Calculate the value of ( ) =÷+− 85684722.Roundoff 75496tothe nearest thousand.3. Evaluate . ( ) 4618324 ÷−+ 4. Round off26548to the nearest ten thousand.5.Write the following in word for45 778.6.AMathematics book and a Science book cost RM 19 and RM 23 respectively. Zulkiflibuy 3 Mathematics book and 2 Science book. Find the total amount ofmoney paid byhim.7.Calculate the value of =÷−+÷+− )2412()32418(2728.Evaluate 8241632
- 4. ÷×+ 9.The diagram shows a number line. Calculate the value o S − R.41 R 53S 6510. Find the sum of3187,7389and 2987.Round offthe answer to the nearestthousand.
- 5. CHAPTER 2 NUMBER PATTERNS AND SEQUENCESNOTE OF NUMBER PATTERNS AND SEQUENCES1. Number Sequence – have a pattern2. Odd Number- Cannot divide by 23. Even Number- Can divide by 24. Prime Number- Can divide by 1 and by itself (1 is not Prime Number)5. LCM4 4 8 122 1 2 33 1 1 31 1 1LCM of 4, 8 and 12 = 324 ×× = 246. HCF2 8 12 202 4 6 102 3 5HCF of 8, 12 and 20= ×× 22= 4 QUESTION OF NUMBER PATTERNS AND SEQUENCES1.
- 6. Find the missing number in the sequence 4 , 7, 13 , 22 , ___ , 492. Write the first five multiple of 83. List all the Prime Numbers between 4o and 60.4. Find the common multiple of 6 and 8 which are less than 80.5. Find the LCM of 4, 6 and 18.6. Find all the prime factor of 32.7. Find the HCF of 18, 36and 54.8. Find the sum of all the prime factors of 196.9. Find the product of the common factor of 18 and 30.10. Given that (k − 4) is the LCM of 18, find the value of k