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Answer the questions below and complete the subtractions. You will need to "break" a ten into 10 units.

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The various resources listed below are aligned to the same standard, (2NBT07) taken from the CCSM (Common Core Standards For Mathematics) as the Addition and subtraction Worksheet shown above.

*Add and subtract within 1000, using concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction; relate the strategy to a written method. Understand that in adding or subtracting three-digit numbers, one adds or subtracts hundreds and hundreds, tens and tens, ones and ones; and sometimes it is necessary to compose or decompose tens or hundreds. *

- Addition & Subtraction: 1 of 3 (within 1000)
- Addition & Subtraction: 2 of 3 (within 1000)
- Addition & Subtraction: 3 of 3 (within 1000)

- Subtracting with Regrouping Ten (includes base ten block visuals)

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*

- Help with Pre-Algebra: Simple Equations (From Lesson)
- Number bonds to 20 e.g.8 + ___ = 20 (From Worksheet)
- Number bonds to 30 e.g.26 + ___ = 30 (From Worksheet)
- Number bonds to 40 e.g.12 + ___ = 40 (From Worksheet)
- Number bonds to 50 e.g.17 + ___ = 50 (From Worksheet)
- Number bonds to 100 e.g. 43 + ___ = 100 (From Worksheet)
- Making (Bridging) Multiples of 10 e.g. 17 + 5, 78 + 7 (From Worksheet)
- Adding To Subtract e.g. 45 - 27 = (45+3 = 48) - (27+3=30) = 18 (From Worksheet)
- Number Bonds To 100 (with blank number lines) (From Worksheet)
- Adding & Subtracting with 3 Numbers (e.g. 5 + 6 + 3 = 14, 12 - 3 + 7 = 16) (From Worksheet)
- Adding 3 Numbers (in easiest order) e.g. 27 + 13 + 15 (From Worksheet)
- 2-digit & 1-digit - no regrouping e.g. 34 + 5, 56 - 4 (From Worksheet)
- 2-digit numbers - no regrouping e.g. 42 + 36, 34 + 12 (From Worksheet)
- 2-digit numbers - regrouping e.g. 47 + 16, 78 - 29 (From Worksheet)
- 2-digit + 1-digit - no regrouping e.g. 34 + 5 (From Worksheet)
- 2-digit + 2 -digit - no regrouping e.g. 42 + 36 (From Worksheet)
- 2-digit + 2-digit - regrouping e.g. 47 + 16 (From Worksheet)
- Three 1-digit numbers e.g. 3 + 4 + 8 (From Worksheet)
- Three 2-digit numbers e.g. 35 + 14 + 26 (From Worksheet)
- 2-digit - 1-digit - no regrouping e.g. 68 - 5 (From Worksheet)
- 2-digit - 1-digit - regrouping e.g. 65 - 7 (From Worksheet)
- 2-digit - 2 -digit - no regrouping e.g. 86 - 43 (From Worksheet)
- 2-digit - 2-digit - regrouping e.g. 57 - 39 (From Worksheet)
- Four 1-digit numbers e.g. 3 + 4 + 8 + 2 (From Worksheet)
- Number Bonds To 100 (From Game)