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31) Equation

Bonds of 10: Building

31.1 Equation Building

Mathematics

Develop the concept of related addition and subtraction equations, rearranged using the part-part-whole relationship, for two-part bonds of 10.

Click this link to read Teacher Notes for more information about “Building Equations Using Part-Part-Whole”.

Language

  • part-part-whole: where the two parts are a bond of the whole number.
  • equals, is equal to
  • addition, add
  • subtraction, subtract, take away

Core Activity Support Materials

Click to open answers in a new tab.

Differentiation

A little easier

A little harder

Equations: part-part-whole rearranged

Addition and subtraction equations don’t have to be written as 

Part + Part = Whole

Whole – Part = Part

An alternative arrangement is

Whole = Part + Part

Part = Whole – Part

Read the Teacher Notes “Building Equations Using Part-Part-Whole” from page 8 onwards for more information about Atypical Arrangement using Part-Part-Whole

Progression

Apply the concept of building related addition and subtraction equations, using part-part-whole, to find missing parts in addition and subtraction equations. Go to

Activity 32

Bonds of 10: Missing Number Equations, Fill a Row