UNIT 14 // SESSION B // MASTER WHEN READY
Odd, even, and skip counting
Name:Date:
1Pair them up. Is there a leftover? Circle ODD or EVEN.
7 ODD / EVEN
12 ODD / EVEN
15 ODD / EVEN
20 ODD / EVEN
9 ODD / EVEN
24 ODD / EVEN
31 ODD / EVEN
46 ODD / EVEN
50 ODD / EVEN
2Skip count.
By 2s: 2, 4, 6, , , , , , , 20
By 5s: 5, 10, 15, , , , , 40, , 50
By 10s: 10, 20, , , , , , 80, , 100
By 25s: 25, 50, , , , , , 200
By 10s past 100: 110, 120, , , ,
3Think about it.
aCan 18 grapes be shared fairly between two people with none left over? Why?
bCan 19 grapes? Why?
cWrite the rule: a number is EVEN if
1. odd, even, odd, even, odd, even, odd, even, even 2. 8,10,12,14,16,18 / 20,25,30,35,45 / 30,40,50,60,70,90 / 75,100,125,150,175 / 130,140,150,160 3. a yes, 18 is even, 9 each. b no, 19 is odd, one is left over (or each gets 9½). c it can be split into pairs with none left over