Pattern Detectives
420, 430, 440, ___, ___
What are the next two numbers AND the rule?
450, 460 — increases by 10
What is 10 more than the number that is 10 less than 452?
452
523 ___ 532
<
Which number is closer to 500: 498 or 502?
Both (equal distance)
Is 635 closer to 600 or 700?
600
601, 611, 621, ___
What is the missing number?
631
I am thinking of a number.
10 less than my number is 390.
What is my number?
400
640 ___ 600 + 40
=
Name a number that is between 615 and 620 AND ends in 8.
618
A student says:
“625 > 631 because 5 > 1.”
Is the student correct? Why or why not?
No — compare tens before ones
270, 280, ___, 300
What number is missing?
290
100 more than a number is 735.
What is the number?
635
708 ___ 780
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What number is halfway between 740 and 760?
750
Three numbers are: 482, 428, 824
Which is greatest? Explain.
824
124, 224, 324, ___
What is the missing number?
424
I start with 468.
I add 100, then subtract 10.
What number do I end with?
558
499 ___ 500 − 1
=
I am greater than 432 and less than 438.
I am an even number.
What number could I be?
434 or 436
You have 490 points.
Newton has 100 fewer.
Descartes has 10 more than Newton.
Who has more points — you or Descartes?
You (490 vs. 400)
98, 108, 118, ___, ___
What are the next two numbers AND what changed?
128, 138 — added 10 each time
The number is 100 less than 700 and 10 more than another number.
What is the other number?
590
Which is greater:
609 or 590 + 20?
590 + 20 = 610 → 610 > 609
True or False:
The number 499 is closer to 500 than 480.
True
Create two different 3-digit numbers that are
less than 700
greater than 680
end in the same digit
Example: 682 and 692