PAT Maths Plus, Test 6, Q4

Linked from: Number and Algebra: Money and financial mathematics 115-124

Content strand: Number and Algebra

PAT Maths scale score: 116.7*
* (adjusted to the PAT Maths 4th Edition scale)

PAT Maths descriptor: Use coins to show change from $30.00. Prerequisites • Reading and interpreting word problems (Concept builder) • Subtraction strategies (Concept builder) • Understanding money amounts (Concept builder) • Change from$1 and \$2 (Concept builder) Common errors and misconceptions

 Key A: Option reasoning A Key B (may have miscalculated the dollar value by one dollar too much, but the number of cents is correct) Newman processing error C (may have miscalculated the cents by matching the number of cents to the question value, but dollar value is correct) Newman reading/decoding and comprehension error D (may have miscalculated the dollar value by one dollar too much and matched the number of cents to the question value) Newman reading/decoding and comprehension error E (may have miscalculated the dollar value by one dollar too little, but the cents value is correct) Newman processing error

Key concepts and skills

• Recognising English words that imply a subtraction or count on operation
• Calculating the amount of change from a multiple of 10 dollars
• Identification of correct change as a set of coins
• Counting on or subtraction strategies for finding the correct change