Odd & Even
Input Output Machines
Fact Families
Fill in the Blank
Addition & Subtraction
100
0, 2, 4, 6, 8 are examples of these.
Even numbers.
100
True or False: All number machines have a rule.
True
100
How many number sentences would you have to make a fact family using the number 3, 2, and 5.
4
100
6 + 2 = __ + 6
2
100
A.J. had 2 sharpened pencils. His friend Andrew gave him 4 more sharpened pencils. How many sharpened pencils did he have in all? (Show your work)
2 + 4 = 6. 6 Sharpened Pencils.
200
11, 13, 15, 17, 29 are examples of these.
Odd numbers
200
Which number would go into the blank space on the number machine below? In 10 15 20 30 35 Out 15 20 25 35 __
40
200
Fill in the missing number sentence: 4 + 2 = 6 2 + 4 = 6 6 - 2 = 4 ?
6 - 4 = 2
200
6, 9, 12, __, 18
15
200
Adrianna had 12 dolls. She gave away 4 dolls to her friends. How many dolls did she have left? (Show your work)
12 - 4 = 8. 8 Dolls
300
Give two examples of an even number.
Answer varies (as long as 0, 2, 4, 6, 8 are in the ones place).
300
What is the rule for the following number machine? In 4 8 12 16 20 Out 0 4 8 12 16
Subtract 4.
300
I want to solve the problem 6 + __ = 13. What number sentence could I use to help me solve this?
13 - 6 = 7
300
What sign would make the inequality true? 3 + 6 ___ 8 + 0
>
300
What is the missing number? 16 - __ = 9
7
400
Give three examples of an odd number.
Answer varies (as long as 1, 3, 5, 7, 9 are in the ones place).
400
If the rule for a number machine is subtract 4 and the input is 10, what would the output be?
6
400
Give a possible inverse operation for the following problem: 7 + 6 = 13
Either 13 - 6 = 7 or 13 - 7 = 6
400
(2 + 3) + 1 = 3 + __
3
400
When you ADD zero to any other number, what do you get?
The other number.
500
Tell me a 3 digit ODD number.
answer varies (as long as 1, 3, 5, 7, or 9 is in the ones place).
500
Create a number machine with the rule being add 3.
answer varies
500
Write the fact family for the numbers 13, 8, and 5.
8 + 5 = 13 5 + 8 = 13 13 - 8 = 5 13 - 5 = 8
500
19, 15, __, 7, 3 Fill in the blank and state the rule for this pattern.
11. Subtract 4
500
What is the answer to an addition problem called?
The sum.
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