Arrays
Do rows go across or do they go up and down?
Across
Is this number even or odd?
16
Even
40 + 40 =
80
70 - 30 =
40
What is another way to say 12:15?
Do columns go across or do they go up and down?
Up and Down
Is this number even or odd?
43
Odd
125 + 42 =
167
693 - 262 =
431
What is another way to say 1:45?
A quarter till 2:00.
How many rows? How many columns?
+ + +
+ + +
+ + +
3 Rows
3 Columns
Is this number even or odd?
10 + 10 + 10 + 10
Even (40)
254 + 405 =
659
999 - 888 =
111
How many minutes are in one hour?
60 minutes
How many total +'s are in the array?
+ + + + +
+ + + + +
+ + + + +
15
Is this number even or odd?
458
Even
382 + 109 =
491
762 - 154 =
608
How many minutes have passed if the minute hand is pointing to the 4?
20 minutes
Write one expression to go with the array.
+ + + +
+ + + +
+ + + +
4 + 4 + 4
3 + 3 + 3 + 3
Is this number even or odd?
3 + 7 + 5 + 9 + 1
Odd (25)
525 + 285 =
810
897 - 598 =
299
How many minutes are in half an hour?
30 minutes