Subtraction Problems - 3-piece puzzles
Students will match subtraction word problems to visual representations of the problem as well as the matching number sentence. They will use the mental strategy of counting back.
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Learning goals
- We are learning to add and subtract numbers within 20, using a variety of strategies, e.g. counting on, counting back, partitioning, subitising and part-part whole knowledge of numbers to 10 and to use the language of 'plus' and 'minus' in story problems.
- We are learning to model problems involving addition and subtraction, including simple whole-dollar money problems, in practical role-play situations.
- We are learning to use a range of strategies, to solve simple addition and subtraction problems.
Curriculum alignment
AC9M1N04
9
Add and subtract numbers within 20, using physical and virtual materials, part-part-whole knowledge to 10 and a variety of calculation strategies
AC9M1N05
9
Use mathematical modelling to solve practical problems involving additive situations, including simple money transactions; represent the situations with diagrams, physical and virtual materials, and use calculation strategies to solve the problem
ACMNA015
8.4
Represent and solve simple addition and subtraction problems using a range of strategies including counting on, partitioning and rearranging parts
MA1-1WM
old
Describes mathematical situations and methods using everyday and some mathematical language, actions, materials, diagrams and symbols
MA1-2WM
old
Uses objects, diagrams and technology to explore mathematical problems
MA1-3WM
old
Supports conclusions by explaining or demonstrating how answers were obtained
MA1-5NA
old
Uses a range of strategies and informal recording methods for addition and subtraction involving one- and two-digit numbers
MA1-4NA
old
Applies place value, informally, to count, order, read and represent two- and three-digit numbers
MA1-CSQ-01
new
Uses number bonds and the relationship between addition and subtraction to solve problems involving partitioning
VCMNA089
Represent and solve simple addition and subtraction problems using a range of strategies including counting on, partitioning and rearranging parts
VCMNA094
Recognise the importance of repetition of a process in solving problems
VCMNA087
Recognise, model, read, write and order numbers to at least 100. Locate these numbers on a number line
VCMNA092
Recognise, describe and order Australian coins according to their value
VCMNA090
Represent practical situations that model sharing
Australian Curriculum covers QLD / SA / WA / NT / TAS / ACT.
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