Drag and drop the number from the right to the number on the left so they both add up to the number in the selection box.

In other words: Click and hold the button down while moving the number. Release the button when over the other number.

There is also a Number Bonds To 10 version of this game here.

## Related Resources

The resources listed below are aligned to the same standard, (2NBT05) re: Common Core Standards For Mathematics as the Addition and subtraction game shown above.

*Fluently add and subtract within 100 using strategies based on place value, properties of operations, and/or the relationship between addition and subtraction. *

### Flashcard

### Game

#### Matching Game

### Lesson

### Quiz

- Addition with making 20 e.g. 18 + 7 = 25
- Addition with making multiples of 10 e.g. 66 + 8 = 74

### Worksheet

#### Bridging

- Making (Bridging) Multiples of 10 e.g. 17 + 5, 78 + 7

#### Number bonds

- Number bonds to 20 e.g.8 + ___ = 20
- Number bonds to 30 e.g.26 + ___ = 30
- Number bonds to 40 e.g.12 + ___ = 40
- Number bonds to 50 e.g.17 + ___ = 50
- Number bonds to 100 e.g. 43 + ___ = 100
- Number Bonds To 100 (with blank number lines)

#### Slightly Different

- Adding To Subtract e.g. 45 – 27 = (45+3 = 48) – (27+3=30) = 18

#### To 100

- 2-digit & 1-digit – no regrouping e.g. 34 + 5, 56 – 4
- 2-digit numbers – no regrouping e.g. 42 + 36, 34 + 12
- 2-digit numbers – regrouping e.g. 47 + 16, 78 – 29
- 2-digit – 1-digit – no regrouping e.g. 68 – 5
- 2-digit – 1-digit – regrouping e.g. 65 – 7
- 2-digit – 2 -digit – no regrouping e.g. 86 – 43
- 2-digit – 2-digit – regrouping e.g. 57 – 39

Similar to the above listing, the resources below are aligned to related standards in the Common Core For Mathematics that together support the following learning outcome:

*Use place value understanding and properties of operations to add and subtract*

- Adding 3 Numbers (in easiest order) e.g. 27 + 13 + 15 (From Worksheet)
- Addition & Subtraction: 1 of 3 (within 1000) (From Worksheet)
- Addition & Subtraction: 2 of 3 (within 1000) (From Worksheet)
- Addition & Subtraction: 3 of 3 (within 1000) (From Worksheet)
- Subtracting with Regrouping Ten (includes base ten block visuals) (From Worksheet)
- Subtraction with regrouping (with place value blocks) (From Worksheet)
- Three 1-digit numbers e.g. 3 + 4 + 8 (From Worksheet)
- Three 2-digit numbers e.g. 35 + 14 + 26 (From Worksheet)
- Four 1-digit numbers e.g. 3 + 4 + 8 + 2 (From Worksheet)