Show:
Even and Odd Numbers
Addition
Subtraction
Counting by...
Mental Math
100
9 + 3
What is 12; even
100
7 + 4
What is 11
100
9 - 4
What is 5
100
Count by 10's to 50
What is 10, 20, 30, 40, 50
100
Name the strategy you would use to solve: 11 + 13
What is Using Doubles, Making 10, One More than, One Less than, Two more than, Two Less than, Thinking Addition for Subtraction Answer: 24
200
7 + 2
What is 9; odd
200
9 + 2
What is 11
200
11 - 5
What is 6
200
Count by 2's starting at 10 and continuing to 30
What is 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30.
200
Name the strategy you would use to solve: 23 + 51
What is Using Doubles, Making 10, One More than, One Less than, Two more than, Two Less than, Thinking Addition for Subtraction Answer: 74
300
9 + 9
What is 18; even
300
13 + 9
What is 22
300
20 - 6
What is 14
300
Start at 50 and count by 5's to 100
What is 50, 55, 60, 65, 70, 75, 80, 85, 90, 95, 100
300
Name the Strategy you would use to solve: 34 + 62
What is Using Doubles, Making 10, One More than, One Less than, Two more than, Two Less than, Thinking Addition for Subtraction Answer: 96
400
15 + 10
What is 25; odd
400
25 + 15
What is 40
400
35 - 14
What is 21
400
Start at 32 and count by 2's to 54
What is 32, 34, 36, 38, 40, 42, 44, 46, 48, 50, 52, 54
400
Name the Strategy you would use to solve: 71 - 15
What is Using Doubles, Making 10, One More than, One Less than, Two more than, Two Less than, Thinking Addition for Subtraction Answer: 54
500
30 + 9
What is 39; odd
500
50 + 45
What is 95
500
55 - 13
What is 42
500
Count by 10's from 1 to 100
What is 10, 20, 30, 40, 50, 60, 70, 80, 90, 100
500
Name the strategy you would use to solve: 53 - 13 Also, what is the answer?
What is Using Doubles, Making 10, One More than, One Less than, Two more than, Two Less than, Thinking Addition for Subtraction Answer: 40