Addition Strategies
Solve this equation using counting on:
9 + 8
17
Solve this equation using counting back:
15 - 6
9
Miss Cavicchi has 5 dollars. She earns 8 more dollars. How many dollars does she have in all? Write an equation and solve.
5 + 8 = 13
Solve the equation below: Show your work.
70 - 60
10
What is this symbol called (-) ?
Solve this equation using a ten frame:
6 + 8
14
Solve this equation using a ten frame:
17 - 6
11
Miss Banyard sees 20 chickens at the farm. 6 of them fly away. How many chickens are left? Write an equation and solve.
20 - 6 = 14
Solve the equation below: Show your work.
24 + 40
64
What is this symbol called (=)
Equal sign
Solve this equation using a known doubles fact
7 + 6 =
13
(6 + 6 = 12 + 1 = 13)
Solve this equation using a known addition fact:
16 - 6 =
10
4 people came to football practice on time. Some more showed up late. Altogether, there were 12 people at football practice. How many people showed up late? Write an equation and solve.
4 + 8 = 12
OR
12 - 4 = 8
Solve the equation below: Show your work.
35 + 8
43
What is the word used to describe information we collect from a survey and putting it in a graph?
Data
Solve this equation using an open number line:
12 + 5
17
Solve this equation using an open number line
12 - 5
7
6 + 7 + 4 = 17
Write a comparison using these two numbers with the correct symbol: >, < or =
64 46
64 > 46
OR
46 < 64
Solve this equation using an open number line.
7 + 4
11
Solve this equation using an open number line.
11 - 10
1
Third grade has 19 students. 7 are boys and the rest are girls. How many students are girls? Write an equation and solve.
19 - 7 = 12
OR
7 + 12 = 19
Fill in the number sequence below:
1, ____, 21, 31, _____, _____, 61, _____, 81, 91
11, 41, 51, 71