Even or Odd
Is the sum of 7+8 even or odd?
Odd - 15
What is the most reasonable estimate for of the sum?
453 + 386
450 + 390 = 840
Round 66 to the nearest 10
70
Finish the pattern
3,6,__,12,15
add 3
Blank is: 9
Is the sum of 70+55 even or odd?
Odd - 125
What is the most reasonable estimate for of the sum?
311 + 563
310 + 560 = 870
Round 431 to the nearest 100
400
What is the pattern rule?
55,63,71,__,87
Add 6
Blank is: 79
Is the sum of 43+47 even or odd?
Even - 90
What is the most reasonable estimate for of the sum?
777+ 222
780 + 220 = 1,000
Round 78 to the nearest 100
100
What equation can be used to find the next pattern?
34,40,__,52,58
40+ __= __
40+6=46
Yes - 164
What is the most reasonable estimate for of the difference?
482 - 162
What is the exact sum?
Estimate: 480 - 160 = 320
Sum: 320
Round 836 to the nearest 10 and 100
100 - 800
What is the pattern rule?
67,61,__,49,43
Subtract 6
Create a 2 digit equation that has a sum that is odd
Show your teacher!
Ex. 45+44 = 89
What is the most reasonable estimate for of the difference?
679 - 542
What is the exact sum?
Estimate: 680 - 540 = 140
Sum: 137
Round 999 to the nearest 10 and 100
10 - 1,000
100 - 1,000
What equation can be used to find the next pattern?
100, 80, __ , 40, 20
80 - __= __
80 - 20 = 60