Short Blocks

# Maths Year 5/6 Spring Decimals and Fractions

Each unit has everything you need to teach a set of related skills and concepts.

## Frog for decimals(suggested as 2 days)

### Planning and Activities

Day 1 Teaching
Use javelin throws as a context to show how we can count up using Frog from 9.56m to 11.32m. Find other differences in throws, measured in metres, using Frog to count up.
Group Activities: T with Y5
Y5 -- Explore differences between height and stride length.
Y6 -- Investigate pairs of lengths with given differences.

Day 2 Teaching
Display a table of distances, in which the lengths can include 1 or 2 decimal places, e.g. 5.3m and 4.56m. Use Frog (counting up) to subtract pairs of numbers with different numbers of decimal places.
Group Activities: T with Y5
Use the ‘Decimal Differences’ in-depth problem-solving investigation below as today’s group activity.
Or, use these activities:
Y5 -- Calculate height differences between 2m and 4m. Investigate missing number subtractions.
Y6 -- Investigate missing number subtractions.

### You Will Need

• Tape measures
• Paper clips
• Number cards 1–9
• Number cards 1–6

### Short Mental Workouts

Day 1
Pairs with a total of 1 metre

Day 2
Subtracting numbers with 1 decimal place

### Worksheets

Day 1
Y5/Y6: Use Frog to calculate annual tree growth.

Day 2
Y5: Find daily heights grown by a bamboo plant.
Find differences between numbers with different numbers of decimal places.
Y6: Find pairs of numbers with differences in given ranges.

### Mastery: Reasoning and Problem-Solving

Y5

• Kyla received £7.29 change from a £20 note. How much did she spend?
• Has the shopkeeper given the correct change?

1. Item bought: £13.45
Paid with: £50
Change given: £36.55

2. Item bought: £64.79
Paid with: £100
Change given: £45.31
• Write the missing digits: £75 – £24.☐6 = £☐.14
• Write 2 amounts with a difference of £34.76.
The larger amount has 23p.

Y6

• Write the missing number in the bar diagram:
 16.6 ? 4.78
• Write two 2-place decimal numbers which add to 8.
• Write two different 2-place decimal numbers which add to 9.7.
• Frog counts up from a number, finishing on 11.3. He makes 3 jumps: first 0.87, then 4, then 0.3. Write the subtraction he is solving.
• Calculate 25 – 12.64 mentally without writing anything. Check your answer using Frog.

In-depth Investigation: Decimal Differences
Children subtract pairs of numbers with consecutive digits and different numbers of decimal places, and look for patterns in their answers.

### Extra Support

Y5: Frog's Teeny Hops
Finding the difference between decimal numbers on either side of a whole number, e.g. 1.8 and 2.3