Question | Answer |
---|---|

8 – 2 = | 6 |

7 – 2 = | 5 |

6 – 2 = | 4 |

5 – 2 = | 3 |

4 – 2 = | 2 |

3 – 2 = | 1 |

2 – 2 = | 0 |

10 – 3 = | 7 |

9 – 3 = | 6 |

8 – 3 = | 5 |

7 – 3 = | 4 |

6 – 3 = | 3 |

5 – 3 = | 2 |

4 – 3 = | 1 |

3 – 3 = | 0 |

10 – 4 = | 6 |

9 – 4 = | 5 |

8 – 4 = | 4 |

7 – 4 = | 3 |

6 – 4 = | 2 |

5 – 4 = | 1 |

4 – 4 = | 0 |

10 – 5 = | 5 |

9 – 5 = | 4 |

8 – 5 = | 3 |

7 – 5 = | 2 |

6 – 5 = | 1 |

5 – 5 = | 0 |

10 – 6 = | 4 |

9 – 6 = | 3 |

8 – 6 = | 2 |

7 – 6 = | 1 |

6 – 6 = | 0 |

10 – 7 = | 3 |

9 – 7 = | 2 |

8 – 7 = | 1 |

7 – 7 = | 0 |

10 – 8 = | 2 |

9 – 8 = | 1 |

8 – 8 = | 0 |

10 – 9 = | 1 |

9 – 9 = | 0 |

10 – 10 = | 0 |

### 2s – 9s Subtraction Facts – Temple

Question | Answer |
---|---|

7 – 2 | 5 |

7 – 3 | 4 |

7 – 4 | 3 |

7 – 5 | 2 |

8 – 2 | 6 |

8 – 3 | 5 |

8 – 4 | 4 |

8 – 5 | 3 |

8 – 6 | 2 |

8 – 7 | 1 |

9 – 2 | 7 |

9 – 3 | 6 |

9 – 4 | 5 |

9 – 5 | 4 |

9 – 6 | 3 |

9 – 7 | 2 |

9 – 8 | 1 |

10 – 1 | 9 |

10 – 2 | 8 |

10 – 3 | 7 |

10 – 4 | 6 |

10 – 5 | 5 |

10 – 6 | 4 |

10 – 8 | 2 |

10 – 9 | 1 |

10 – 7 | 3 |

11 – 2 | 9 |

11 – 3 | 8 |

11 – 4 | 7 |

11 – 5 | 6 |

11 – 6 | 5 |

11 – 9 | 2 |

11 – 7 | 4 |

11 – 8 | 3 |

12 – 3 | 9 |

12 – 4 | 8 |

12 – 5 | 7 |

12 – 6 | 6 |

12 – 7 | 5 |

12 – 8 | 4 |

12 – 9 | 3 |

13 – 4 | 9 |

13 – 5 | 8 |

13 – 6 | 7 |

13 – 7 | 6 |

13 – 6 | 7 |

13 – 7 | 6 |

13 – 8 | 5 |

13 – 9 | 4 |

14 – 5 | 9 |

14 – 6 | 8 |

14 – 7 | 7 |

14 – 8 | 6 |

14 – 9 | 5 |

15 – 6 | 9 |

15 – 7 | 8 |

15 – 8 | 7 |

15 – 9 | 6 |

16 – 7 | 9 |

16 – 8 | 8 |

16 – 9 | 7 |

17 – 8 | 9 |

17 – 9 | 8 |

18 – 9 | 9 |

### Subtraction Facts, Whole Numbers, Families 1 through 14

Question | Answer |
---|---|

0-0 | 0 |

1-0 | 1 |

1-1 | 0 |

2-0 | 2 |

2-1 | 1 |

2-2 | 0 |

3-0 | 3 |

3-1 | 2 |

3-2 | 1 |

3-3 | 0 |

4-0 | 4 |

4-1 | 3 |

4-2 | 2 |

4-3 | 1 |

4-4 | 0 |

5-0 | 5 |

5-1 | 4 |

5-2 | 3 |

5-3 | 2 |

5-4 | 1 |

5-5 | 0 |

6-0 | 6 |

6-1 | 5 |

6-2 | 4 |

6-3 | 3 |

6-4 | 2 |

6-5 | 1 |

6-6 | 0 |

7-0 | 7 |

7-1 | 6 |

7-2 | 5 |

7-3 | 4 |

7-4 | 3 |

7-5 | 2 |

7-6 | 1 |

7-7 | 0 |

8-0 | 8 |

8-1 | 7 |

8-2 | 6 |

8-3 | 5 |

8-4 | 4 |

8-5 | 3 |

8-6 | 2 |

8-7 | 1 |

8-8 | 0 |

9-0 | 9 |

9-1 | 8 |

9-2 | 7 |

9-3 | 6 |

9-4 | 5 |

9-5 | 4 |

9-6 | 3 |

9-7 | 2 |

9-8 | 1 |

9-9 | 0 |

10-0 | 10 |

10-1 | 9 |

10-2 | 8 |

10-3 | 7 |

10-4 | 6 |

10-5 | 5 |

10-6 | 4 |

10-7 | 3 |

10-8 | 2 |

10-9 | 1 |

10-10 | 0 |

11-0 | 11 |

11-1 | 10 |

11-2 | 9 |

11-3 | 8 |

11-4 | 7 |

11-5 | 6 |

11-6 | 5 |

11-7 | 4 |

11-8 | 3 |

11-9 | 2 |

11-10 | 1 |

11-11 | 0 |

11-0 | 11 |

12-0-12 | |

12-1 | 11 |

12-2 | 10 |

12-3 | 9 |

12-4 | 8 |

12-5 | 7 |

12-6 | 6 |

12-7 | 5 |

12-8 | 4 |

12-9 | 3 |

12-10 | 2 |

12-11 | 1 |

12-12 | 0 |

13-0 | 13 |

13-1 | 12 |

13-2 | 11 |

13-3 | 10 |

13-4 | 9 |

13-5 | 8 |

13-6 | 7 |

13-7 | 6 |

13-8 | 5 |

13-9 | 4 |

13-10 | 3 |

13-11 | 2 |

13-12 | 1 |

13-13 | 0 |

14-0 | 14 |

14-1 | 13 |

14-2 | 12 |

14-3 | 11 |

14-4 | 10 |

14-5 | 9 |

14-6 | 8 |

14-7 | 7 |

14-8 | 6 |

14-9 | 5 |

14-10 | 4 |

14-11 | 3 |

14-12 | 2 |

14-13 | 1 |

14-14 | 0 |

### Subtraction Doubles Facts 0 – 20

Question | Answer |
---|---|

20-10 | 10 |

14-7 | 7 |

16-8 | 8 |

10-5 | 5 |

8-4 | 4 |

2-1 | 1 |

18-9 | 9 |

12-6 | 6 |

8-4 | 4 |

6-3 | 3 |

4-2 | 2 |

### Understanding Addition & Subtraction

Term | Definition |
---|---|

part | one piece of a whole |

plus | added to |

sum | the amount in all after you add |

add | join groups together |

addition sentence | sentence showing numbers added together to equal a sum example: 3 + 4 = 7 |

digit | single number (0,1,2,3,4,5,6,7,8,9) All numbers are created using these digits. |

equal | means "the same as" |

whole | two or more parts added together |

join | put together |

difference | the amount that is left after you subtract |

minus | to take away or subtract |

subtraction sentence | sentence showing numbers subtracted to equal a difference example: 8 – 4 = 4 |

subtract | find out how many are left or which group has more |

separate | can mean to subtract |

fewer | having a lesser amount |

more | a group with a greater number |

related | addition and subtraction sentences with the same numbers |

fact family | a group of related addition and subtraction facts |

### Number Sense: Addition and Subtraction

Term | Definition |
---|---|

addends | Numbers added together to give a sum. Example: 7 + 5 = 12, 7 and 5 are addends |

sum | The answer when adding two or more addends. Example: 7 + 5 = 12, 12 is the sum |

Commutative (Order) Property of Addition | Numbers can be added in any order and the sum will be the same. Example: 5 + 3 = 3 + 5 |

Associative (Grouping) Property of Addition | Numbers can be grouped in any way and the sum will be the same. Example: (3 + 2) + 4 = 3 + (2 + 4) |

Identity (Zero) Property of Addition | The sum of zero and any number is that number. Example: 0 + 4 = 4 |

difference | The answer when subtracting two numbers. Example: 7 – 2 = 5, 5 is the difference |

fact family | A group of related facts using the same numbers. Example: 5 + 3 = 8, 3 + 5 = 8, 8 – 3 = 5, and 8 – 5 = 3 |

round | Finding a number closest to a specific place value. We use round numbers when we do not use an exact number. Example: 27 rounds to 30 |

estimate | To give a number or answer that tells about how many or how much. |

compatible numbers | Numbers that are easy to add, subtact, multiply, or divide mentally. |

equation | A number sentence that uses an equal sign (=) to show that the value to its left is the same as the value to its right. Example: 6 + 5 = 10 |

### Subtraction facts from 18

Problem | Answer |
---|---|

9-7 | 2 |

4-1 | 3 |

11-8 | 3 |

10-6 | 4 |

9-8 | 1 |

6-3 | 3 |

5-4 | 1 |

8-3 | 5 |

4-1 | 3 |

2-1 | 1 |

9-7 | 2 |

6-5 | 1 |

10-7 | 3 |

7-6 | 1 |

11-7 | 4 |

7-3 | 4 |

10-2 | 8 |

11-9 | 2 |

9-3 | 6 |

13-6 | 7 |

15-6 | 9 |

13-5 | 8 |

13-6 | 7 |

10-4 | 6 |

11-3 | 8 |

8-4 | 4 |

9-3 | 6 |

4-0 | 4 |

7-6 | 1 |

8-7 | 1 |

14-9 | 5 |

9-7 | 2 |

8-6 | 2 |

12-3 | 9 |

13-9 | 4 |

12-9 | 3 |

13-5 | 8 |

8-2 | 6 |

5-2 | 3 |

11-2 | 9 |

4-1 | 3 |

9-5 | 4 |

10-3 | 7 |

11-3 | 8 |

10-8 | 2 |

5-2 | 3 |

6-4 | 2 |

8-5 | 3 |

6-4 | 2 |

3-0 | 3 |

7-2 | 5 |

14-6 | 8 |

### Adding and Subtracting Whole Numbers

Question | Answer |
---|---|

Mary has 15 red apples in her basket. Brittany gives her 9 more apples. How many total apples does she have in her basket? | 24 apples |

Lily gathered 10 potatoes from her mothers garden. She then ate 4 of them for dinner. How many potatoes does she have left? | 6 potatoes |

65 + 23 = ? | 88 |

When you add two numbers together, what is the answer called? | Sum |

When you subtract two numbers, what is the answer called? | Difference |

Brad had 37 pieces of paper in his notebook. He gave Scott 10 pieces of paper for his homework. How many pieces of paper does Brad now have? | 10 pieces of paper |

What place value comes after the ones place? | Tens |

What place value comes after the tens place? | Hundreds |

Jamie has 4 crayons to color her picture. She asks to borrow 16 crayons from Elizabeth to finish her work. How many total crayons are there between the two girls? | 20 crayons |

29 – 14 = ? | 15 |

### Wirtz Plane Geometry Carnegie Lesson 1.2

Term | Definition |
---|---|

Rectangle (p13) | A parallelogram with four right angles. |

Width of a rectangle (p13) | The side to side measurement of a rectangle May also be called the base. |

Length of a rectangle (p13) | The top to bottom measurement of a rectangle. May also be called the height. |

Base of a geometric figure (p13) | The side or face to which an altitude is drawn, or is considered to be drawn. |

Height of a parallelogram (p13) | The length of a perpendicular line segment that connects one of the corners of the parallelogram to the opposite side. |

Parallelogram (p13) | A quadrilateral in which both pairs of opposite sides are parallel. |

### Dividing Problems

Question | Answer |
---|---|

28/7 | 4 |

35/5 | 7 |

100/25 | 4 |

369/3 | 123 |

400/10 | 40 |

24/8 | 3 |

25/5 | 5 |