Ten's Time
100 x 28
2800
What does 25 round to?
30
21 x 8
168
27,502
20 x 9
180
600
Set up the box for 37 x 45
30+7 times 40+5
What place is the 2 in?
320,470
Ten Thousands
70 x 60
4,200
Estimate: 57 x 8
480
17 times 43
713
1735+2189
300 x 70
21,000
Estimate: 471 x 87
45,000
56 x 21
1,176
What kind of angle makes up the corner of a square?
Right Angle
True or False:80 x 50 = 400
False (4,000)
What are the 3 steps to estimate?
Round, Fast Facts, Zeros
FINAL JEOPARDY
A store sells 17 blue computers and 15 red ones. Each cost 35 dollars. How much money does the store make?
$1,120
What quadrillateral has 4 sides with the same length but NO 90 degree angles?
rhombus