## Related Resources

The Addition and subtraction Flashcard shown above is aligned with standard 3NBT02 taken from the Common Core Standards For Mathematics (see the extract below) as are the resources listed below.

*Fluently add and subtract within 1000 using strategies and algorithms based on place value, properties of operations, and/or the relationship between addition and subtraction. *

### Example/Guidance

### Flashcard

- 2-digit + 1-digit – no regrouping e.g. 34 + 5
- 2-digit + 2-digit – no regrouping e.g. 42 + 36
- 2 digit – 2 digit (no regrouping) e.g. 48 – 36

### Game

#### Math Games From The BBC

- Guardians: Defenders of Mathematica (by BBC) Multiple subjects (ages 6 – 11)

### Worksheet

#### Third/ Fourth Grade

- 3-digit – 2-digit numbers e.g. 145 – 52
- 3-digit – 2-digit numbers e.g. 145 – 57
- 3-digit – 3-digit numbers e.g. 345 – 167
- 3-digit sums e.g. 45 + 82
- 3-digit sums (carrying tens) e.g. 68 + 56

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 perform multi-digit arithmetic*

- Multiplying By Multiples of 10 (From Example/Guidance)
- How To Round To The Nearest 10 (From Example/Guidance)
- Rounding Numbers To The Nearest Hundred (From Example/Guidance)
- Multiplying by Multiples of 10 (e.g. 50 x 7) (From Worksheet)
- Multiplication Bingo (with multiples of 10) (From Worksheet)
- Rounding to the Nearest 10 & 100 To the nearest 10 and/ or 100 (From Worksheet)
- Rounding numbers to nearest 10 (From Worksheet)
- Rounding numbers to nearest 100 (From Worksheet)