3990 Learning at home workbook 6 ebook
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ROUNDING NUMBERS<br />
1. Round these numbers to the nearest 10. Remember, any number ending in five is rounded up.<br />
(a) 3527 (b) 86 399 (c) 537 284<br />
(d) 1 423 675 (e) 949 733 (f) 2 573 878<br />
(g) 310 003 (h) 5 803 426 (i) 1 266 485<br />
(j) 674 383 (k) 99 999 (l) 1 000 009<br />
2. Round these numbers to the nearest 100.<br />
(a) 728 699 (b) 914 504 (c) 1 647 835<br />
(d) 1 860 078 (e) 2 537 550 (f) 753 024<br />
(g) 680 305 (h) 3 451 895 (i) 1 533 748<br />
(j) 2 451 118 (k) 88 008 (l) 2 989 989<br />
3. Round these numbers to the nearest 1000.<br />
(a) 6784 (b) 821 435 (c) 48 125<br />
(d) 1 375 988 (e) 312 527 (f) 869 432<br />
(g) 2 755 780 (h) 3 201 186 (i) 574 831<br />
(j) 1 688 795 (k) 44 999 (l) 108 108<br />
4. M<strong>at</strong>ch the number to the nearest 10 000 by drawing lines.<br />
(a) 1 352 687 • • 1 900 000<br />
(b) 1 585 504 • • 1 350 000<br />
(c) 1 896 950 • • 1 590 000<br />
5. Estim<strong>at</strong>e these answers by rounding to the nearest 10.<br />
(a) 37 + 56 = + = (b) 49 + 78 = + =<br />
(c) 306 + 21 = + = (d) 145 + 61 = + =<br />
(e) 255 + 9 = + = (f) 999 + 99 = + =<br />
6. Estim<strong>at</strong>e these answers by rounding to the nearest 100.<br />
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(a) 407 + 399 = + = (b) 899 + 555 = + =<br />
(c) 2222 + 764 = + = (d) 5099 + 5999 = + =<br />
Round these numbers to the nearest 100 000:<br />
(a) 367 964 (b) 867 500<br />
(c) 1 235 469 (d) 2 409 809<br />
R.I.C. Public<strong>at</strong>ions® www.ricpublic<strong>at</strong>ions.com.au 21 ISBN 978-1-922313-88-1 <strong>Learning</strong> <strong>at</strong> <strong>home</strong> <strong>workbook</strong> 6
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