ADDITION TO 20
16 + 20
What is 36?
25 - 5
What is 20?
Skip count by 2's to 20.
What is 2,4,6,8,10,12,14,16,18,20?
12 + 17 = 29
What is 29-17 = 12, 29-12=17
There are 5 markers on the desk. 2 markers roll off the desk. How many are left?
What is 3?
3 + 11
What is 14?
15 - 4
What is 11?
Skip count by 5's to 55?
What is 5,10,15,20,25,30,35,40,45,50,55?
10-3 = 7
What is 7+ 3 = 10 , 3 + 7 =10
There are some cats in the backyard. Then 5 more cats join the. There are 16 cats altogether. How many cats were there in the beginning?
What is 21?
60 + 12
What is 72?
23 - 6
What is 17?
What is wrong with this skip count by 2's ; 32,34,36,38,42,44,46,48,50?
What is 40?
15+ 2 = 17
What is 17 - 2 = 15 , 17 -15 = 2
There are some paintings on a wall. Then 8 paintings fall on the floor. There are 13 paintings left on the wall. How many paintings were there in the beginning?
What is 21 ?
70 +10
What is 80?
30 -9
What is 21?
Skip counting by 10's from 32 to 72 .
What is 32,42,52,62,72?
100 - 15 = 85
What is 85 + 15 = 100 , 15 + 85 = 100
There are some birds in a tree. The wind blows 6 birds from the tree. There are 3 birds left. How many birds were there in the beginning?
What is 9 ?
73 + 5
What is 78?
45-10
What is 35?
Skip counting backwards from 65 to 15 by 5's.
What is 65,60,55,50,45,40,35,30,25,20,15?
90 - 10= 80
What is 80 + 10 = 90 , 10+ 80 = 90?
There are some birds in a tree. The wind blows 26 birds from the tree. There are 11 birds left. How many birds were there in the beginning?
What is 37?