Look for a Pattern
100
Add using mental math. 20 + 42 =
62
100
Add the ones. Use mental math. 17 + 4 =
21
100
Add using mental math. 41 + 24 =
65
100
Add using mental math. 50 + 30 =
80
100
Find the PATTERN and the NEXT 2 NUMBERS: 65, 55, 45
-10 35, 25
200
Add using mental math. 53 + 30 =
83
200
Add the ones. Use mental math. 38 + 5 =
43
200
Add using mental math. 53 + 15 =
68
200
Add using mental math. 20 + 30 =
50
200
Find the PATTERN and the NEXT 2 NUMBERS: 2, 7, 12
+5 17, 22
300
Add using mental math. 35 + 40 =
75
300
Add the ones. Use mental math. 49 + 3 =
52
300
Add using mental math. 62 + 25 =
87
300
Add using mental math. 20 + 50 =
70
300
Find the PATTERN and the NEXT 2 NUMBERS: 10, 20, 30
+10 40. 50
400
Add using mental math. 50 + 19 =
69
400
Find the missing number that will make the next ten. 53+ = 60
7
400
Add using mental math. 43 + 36 =
79
400
Add using mental math. 40 + 60 =
100
400
Find the PATTERN and the NEXT 2 NUMBERS: 2, 4, 6
+2 8, 10
500
Nellie had 14 rubber bands. Then she bought a pack of 30 rubber bands. How many rubber bands does Nellie have now?
44
500