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COMPARING AND ORDERING OF NUMBERS

COMPARING AND ORDERING OF NUMBERS. CHAPTER 1. BY M.Veerasakdi Leotsopha. WARM UP !. Guess Your number ! Guess My number !. Objectives. 1. Be able to read numbers to hundred thousand 2. Be able to identify the place value of each digit in numbers up to one hundred thousand

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COMPARING AND ORDERING OF NUMBERS

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  1. COMPARING AND ORDERING OF NUMBERS CHAPTER 1 BY M.VeerasakdiLeotsopha

  2. WARM UP ! • Guess Your number ! • Guess My number !

  3. Objectives • 1. Be able to read numbers to hundred thousand • 2. Be able to identify the place value of each digit in numbers up to one hundred thousand • 3. Know how to write a number in word form

  4. 1. Recognise = to identify / prove 2. Place value = the position of a single digit in a whole number 3. Ten Thousands = place valueof digit ten thousand 4. Thousands = place valueof digit thousand 5. Hundreds = place valueof digit hundred 6. Tens = place valueof digit ten 7. Ones = place valueof digit one 8. Numerals = symbols or mark used to represent a number 9. Number name = express numbers in words 10. Expanded form = the sum of each digit Vocabulary

  5. 11. Comparing = to describe something as similar 12. Ordering = the way in which things are arranged 13. Ascending order = arrange from smallest to largest 14. Descending order = arrange from largest to smallest 15. Successor = the number that comes just after 16. Predecessor = the number that comes just before 17. Rounding off = to estimate 18. Estimation = approximation 19. Sum of = to combine two things or more 20. Difference of = left over from subtraction 21. Wrap up = conclusion

  6. Comparing and Ordering of numbers Page 11 Ex. 1.5 • Fill in the correct symbol < or >. • 1. <2.> • 3. > 4.> • 5. > 6.< • 7. < 8.> • 9. > 10. < • B. Ascending order (Smallest Largest) • 1) 23,496 32,396 32,496 33,496 • 2) 218,436 428,970 810,003 923,490 • 3) 105,203 106,320 211,456 900,999 • 4) 232,220 332,230 332,303 333,220 C. Descending order (Largest Smallest) 1) 55,325 55,225 54,325 54,225 2) 464,480 463,804 463,480 436,048 3) 831,625 831,256 813,526 813,256 4) 650,650 565,000 506,500 500,650

  7. Rounding Numbers Ex.1.7 Page 14 • Round the following numbers to the nearest ten. • 1) 178 = 180 2) 56 = 60 3)71 = 70 • 4) 49 = 50 5) 25 = 30 6) 1,239 = 12,40 • 7) 1,978 = 1,980 8) 27,452 = 27,450 B. List all the numbers that can be rounded the …. 1) 140 = 135 – 139 , 141 – 144 2) 30 = 25 – 29 , 31 – 34 3) 200 = 195 – 199 , 201 – 204 4) 190 = 185 – 189 , 191 – 194

  8. C. Round the following numbers to the nearest hundred. 1) 1,289 = 1.300 2) 535 = 500 3) 1,229 = 1,200 4) 1,156 = 1,100 D. List all the numbers that can be rounded the …. 1) 1,400 = 1350 – 1390 , 1410 – 1440 2) 2,500 =2,450 – 2,490 , 2,510 – 2,540 3) 3,600 = 3,550 – 3,590 , 2,610 – 2,640 4) 4,700 =4,650 – 4,690 , 4,710 – 4,740 E , F , G , H , I < Skip >

  9. Estimation Ex. 1.8 Page 18 • Round off the ………. ten • a) 650 + 260 ~ 910 d) 540 - 360 ~180 • b) 750 - 220 ~ 530 e) 6,360 + 140 ~ 6,500 • c) 860 + 300 ~ 1,160 f) 9,850 - 540 ~ 9,310 2. Round off the ………. hundred a) 600 + 500 ~ 1,100 d) 800 - 500 300 b) 4,300 + 300 ~ 4,600 e) 6,400 - 400 6,000 c) 2,700 + 2400 ~ 5,100 f) 8,500 - 6,300 2,200 No .3 < Skip >

  10. Worksheet 1 Worksheet 2 Math Racing Games

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