Adding Tens
10+30
40
40-10
30
Eva has 39 pennies. She find 1 more penny. How many pennies does she have now?
40
33+10
43
70, ___, 90, 100
80
34+10
44
53-10
43
Dan Dan counted 49 large rocks and 10 small rocks. How many rocks did Dan Dan count?
59
58+20
78
44, 45, ___
46
56+20
76
87-30
57
There are 9 red hats and 4 blue hats. How many more red hats are there than blue?
5
50-1
49
57,58, 59, ___
60
10+53
63
88-10
78
Tim has 25 lollipops. He give one to his sister. How many lollipops he have now?
24
55+10
65
43, 53, 63, ____, 83
73
12+80
92
79-40
39
Josh read 24 pages yesterday. He read 10 pages today. How many pages he read in all?
34
100-1
99
10, 15, 20, __, 30, 35
25