ROUNDING APPROXIMATIONS LESSON 1 ROUNDING NUMBERS NEAREST 10
ROUNDING & APPROXIMATIONS: LESSON 1 ROUNDING NUMBERS (NEAREST 10, 1000)
The population of a Maltese Town 9000 ROUNDING 8700 ESTIMATE 8720 ESTIMATE Least Precise Estimate 8721 EXACT
The population of a Maltese Town 9000 ROUNDING 8700 Rounded to the nearest 100 Least Precise Estimate 8720 Rounded to the nearest 10 8721 EXACT
ROUNDING TO THE NEAREST 10 67
ROUNDING TO THE NEAREST 10 67
ROUNDING TO THE NEAREST 10 60 61 62 63 64 65 66 67 68 69 70 67
ROUNDING TO THE NEAREST 10 67 60 61 62 63 64 65 66 67 68 69 70 ROUND DOWN ? OR ROUND UP ?
ROUNDING TO THE NEAREST 10 67 60 61 62 63 64 65 66 67 68 69 70 ROUND UP ? 67 is closer to 70. Thus, 67 is rounded up to 70.
ROUNDING TO THE NEAREST 10 14
ROUNDING TO THE NEAREST 10 14
ROUNDING TO THE NEAREST 10 10 11 12 13 14 15 16 17 18 19 20 14
ROUNDING TO THE NEAREST 10 14 10 11 12 13 14 15 16 17 18 19 20 ROUND DOWN ? OR ROUND UP ?
ROUNDING TO THE NEAREST 10 14 10 11 12 13 14 15 16 17 18 19 20 ROUND DOWN ? 14 is closer to 10. Thus, 14 is rounded down to 10.
ROUNDING TO THE NEAREST 10 35
ROUNDING TO THE NEAREST 10 35
ROUNDING TO THE NEAREST 10 30 31 32 33 34 35 36 37 38 39 40 35
ROUNDING TO THE NEAREST 10 35 30 31 32 33 34 35 36 37 38 39 40 ROUND DOWN ? OR ROUND UP ?
ROUNDING TO THE NEAREST 10 35 30 31 32 33 34 35 36 37 38 39 40 ROUND UP ? In such a case, we always ROUND UP. Thus 35 rounds up to 40.
ROUNDING TO THE NEAREST 10 300 310 320 330 340 350 360 370 380 390 40 356 H T U
ROUNDING TO THE NEAREST 10 300 310 320 330 340 350 360 370 380 390 40 356 H T U
ROUNDING TO THE NEAREST 10 351 352 353 354 355 356 357 358 359 36 356
ROUNDING TO THE NEAREST 10 356 350 351 352 353 354 355 356 357 358 359 36 ROUND DOWN ? OR ROUND UP ?
ROUNDING TO THE NEAREST 10 356 350 351 352 353 354 355 356 357 358 359 36 356 H T U ROUND UP ?
ROUNDING TO THE NEAREST 10 356 350 351 352 353 354 355 356 357 358 359 36 356 H T ROUND UP ? U 356 to the nearest 10 is 360
ROUNDING TO THE NEAREST 100 0 100 200 300 400 500 600 700 800 900 10 291 H T U
ROUNDING TO THE NEAREST 100 0 100 200 300 400 500 600 700 800 900 10 291 H T U
ROUNDING TO THE NEAREST 100 210 220 230 240 250 260 270 280 290 30 291 H T U
ROUNDING TO THE NEAREST 100 210 220 230 240 250 260 270 280 290 30 ROUND DOWN ? 291 OR ROUND UP ?
ROUNDING TO THE NEAREST 100 210 220 230 240 250 260 270 280 290 30 291 H T U 291 rounds up to 300. ROUND UP
ROUNDING TO THE NEAREST 100 0 100 200 300 400 500 600 700 800 900 10 749 H T U
ROUNDING TO THE NEAREST 100 0 100 200 300 400 500 600 700 800 900 10 749 H T U 749 rounds down to 700.
ROUNDING TO THE NEAREST 100 0 100 200 300 400 500 600 700 800 900 10 6072 TH H T U
ROUNDING TO THE NEAREST 100 02 0 17 60 TH H T U 6072 rounds UP to 6100.
ROUNDING TO THE NEAREST 1000 0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10, 5841 TH H T U
ROUNDING TO THE NEAREST 1000 1 04 00 6 58 TH H T U 5841 rounds UP to 6000.
ROUNDING TO THE NEAREST 1000 127631 TH Rounded (Less Precise) H T U 000
ROUNDING TO THE NEAREST 1000 12 7631 TH Rounded (Less Precise) H T U 000
ROUNDING TO THE NEAREST 1000 127631 TH Rounded (Less Precise) H T U 12? 000 keep zero
1 2 77 6 3 1 +1 1 2? 0 0 0 same
1 2 77 6 3 1 +1 1 2 000 same
127631 +1 1 27000 same ROUND DOWN
1 27 6 3 1 +1 same 8 1 2? 0 0 0 7 ROUND DOWN
1 27 6 3 1 +1 same 8 ROUND UP 1 2? 0 0 0 7 ROUND DOWN
1 27 6 3 1 +1 same 8 1 2? 0 0 0 7 Smaller than 5 (0, 1, 2, 3, 4)
1 27 6 3 1 +1 same 8 1 2? 0 0 0 7 Smaller than 5 (0, 1, 2, 3, 4)
1 27 6 3 1 +1 same 5 or Greater (5, 6, 7, 8, 9) 8 1 2? 0 0 0 7 Smaller than 5 (0, 1, 2, 3, 4)
1 27 6 3 1 +1 8 5 or Greater (5, 6, 7, 8, 9) 1 2? 0 0 0
1 27 6 3 1 1 28000
CONCLUSION This is a very IMPORTANT and USEFUL topic. So, you need: A LOT OF PRACTICE
- Slides: 49