Adding Tens
10 + 30
40
40 - 20
20
Some children wrote letters. 22 children wrote friendly letters. The other 41 children wrote business letters. How many children wrote letters?
63
33 + 11
44
____+5=25
20
34 + 30
64
53 - 20
33
Dan Dan counted 49 large rocks and 16 small rocks. How many rocks did Dan Dan count?
65
58 + 26
84
9+____=18
9
56 + 20
76
87 - 70
17
Emily's team scored 55 points. Emily scored 30 of the points. How many points did the other players score?
25
17 - 9
8
____-4=56
60
45 + 50
95
98 - 50
48
Paige went on 72 walks. 40 of her walks were on trails, and her others were on the beach. How many of her walks were on the beach?
32
55 + 45
100
33+____=99
66
12 + 80
92
79 - 40
39
Dominic planted 42 trees on Wednesday and 38 Thursday. Someone dug up 16 trees on Friday. How many trees were left ?
64
74 - 30
44
100-_____=1
99