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# Year 5 Block B – Securing number facts, understanding shape

## The focuses of mathematics learning within this block are:

• Written methods: addition and subtraction of decimals
• Mental methods and recall: sums, differences, doubles and halves of decimals
• Tables to 10 × 10; multiplying/ dividing multiples of 10 or 100
• Factors, common multiples
• Patterns, relationships and properties of numbers and shapes
• Representing a problem using calculations or diagrams
• Visualising 3-D and 2-D shapes
• Properties of 3-D and 2-D shapes
• Nets of solids
• Using a calculator
The objectives for the block are listed in the table – the right hand column indicates how the objectives might be addressed in the units
ObjectivesUnit 1Unit 2Unit 3
Explore patterns, properties and relationships and propose a general statement involving numbers or shapes; identify examples for which the statement is true or false
Represent a puzzle or problem by identifying and recording the information or calculations needed to solve it; find possible solutions and confirm them in the context of the problem
Use knowledge of place value and addition and subtraction of two-digit numbers to derive sums and differences and doubles and halves of decimals (e.g. 6.5 ± 2.7, half of 5.6, double 0.34)
Recall quickly multiplication facts up to 10 × 10 and use them to multiply pairs of multiples of 10 and 100; derive quickly corresponding division facts
Identify pairs of factors of two-digit whole numbers and find common multiples (e.g. for 6 and 9)
Use knowledge of rounding, place value, number facts and inverse operations to estimate and check calculations
Use efficient written methods to add and subtract whole numbers and decimals with up to two places
Use a calculator to solve problems, including those involving decimals or fractions (e.g. to find 3/4 of 150g); interpret the display correctly in the context of measurement
Identify, visualise and describe properties of rectangles, triangles, regular polygons and 3-D solids; use knowledge of properties to draw 2-D shapes and identify and draw nets of 3-D shapes
Complete patterns with up to two lines of symmetry; draw the position of a shape after a reflection or translation