Comparing three-digit numbers

1. Can you tell which number is more? Try! Write  <  or  >  between the numbers.

 a. 145 154

b.

 234 324
 c. 189 302

d.

 513 315

Learn the new symbols:

= 100,   = 10, and    = 1.

 = 124
 = 240

2. Draw the symbols ,   , and    for the numbers. Then compare and write  <  or  > .

 a.  120 130
 b.  240 420
 c.  305 503
 d.  453 534

 To compare three-digit numbers: First check if one number has more  hundreds  than the other. For example, 652 < 701, because 701 has more hundreds than 652. If the numbers have the same amount of hundreds, then check the  tens . For example, 652 > 639 because though both have six hundreds, 652 has more tens than 639. If the numbers have the same amount of hundreds AND the same amount  of tens, then look at the  ones . For example, 652 < 655 because though both have six hundreds and five tens, 655 has more  ones . Remember, the open end (open mouth) of the symbols < and > ALWAYS  opens towards the bigger number.

3. Find the biggest number in each set!

 a.  259,  592,  295 b.  470,  774,  747 c.  409,  944,  949 d.  506,  605,  505 e.  911,  119,  191 f.  482,  382,  284 g.  334,  433,  403 h.  208,  820,  802

4. Write either < or > in between the numbers.

 a.  159   <  300 b.  122       100 c.  320      328 d.  212      284 e.  200      190 f.  600      860 g.  456      465 h.  711      599 i.  780      500 j.  107      700 k.  566      850 l.  840      480

5. Arrange the three numbers in order.

 a.  140, 156, 149 140  <  149  <  156 b.  357, 573, 750 c.  239, 286, 133 d.  670, 766, 676

6. Mark the numbers on the number line: 513, 530, 489, 468, 596, 606, 560, 466, 506, 516

7. Find a number to write on the empty line. There are many possibilities!

 a.  140 < _________ < 149     c.  279 < _________ < 290 b.  267 < _________ < 804 d.  304 < _________ < 310

8. Find your way through the maze! The rules are: you can move either left, right, or
down, provided that the number following is BIGGER than the number in the
square you are in.

 100 121 127 133 167 189 200 214 212 398 145 166 134 135 120 230 212 256 347 405 156 167 137 156 155 226 356 378 380 407 632 234 138 246 267 278 476 477 450 417 432 256 200 250 245 300 355 487 478 456 355 253 289 244 305 303 570 569 490 453 361 385 377 367 356 301 537 566 505 498 689 654 390 480 478 488 675 507 508 689 654 543 489 488 483 577 589 609 504 769 723 566 570 589 578 734 631 616 789 1000