Week 3 – Lesson 2...WEEK 3 –LESSON 4. Starter Match the vocabulary words to the correct category. Are they related to mass or length? length mass millimetres g kg metres cm long

WEEK 3 – LESSON 4

StarterMatch the vocabulary words to the correct category.

Are they related to mass or length?

length mass

millimetres

g kg

metres cm

long

heavyscales kilograms

height

ruler

short

light

centimetres

grams

m

kilometres

mm

km

How did you do?Match the vocabulary words to the correct category.

Are they related to mass or length?

length mass

millimetres

g

kg

metres

cm

long

heavy

scales

kilograms

height

ruler short

light

centimetres

gramsm

kilometres

mmkm

• I can add measurements of length with

one decimal place.

• I can add measurements of mass with one

decimal place.

• I can solve reasoning problems by

calculating measurements of mass and

length.

• Money

• Length

• Mass

• Decimal

• Mass

• Diameter

How can I solve problems involving

money, length and mass?

British CoinsHere are the mass and diameter of British coins. Diameter

means the length across the middle of the coin.

Coin Diameter Mass

£2 28.4mm 12g

£1 23.4mm 8.8g

50p 27.3mm 8g

20p 21.4mm 5g

10p 24.5mm 6.5g

5p 18mm 3.3g

2p 25.9mm 7.1g

1p 20.3mm 3.6g

Which coin is the lightest?

Which coin is the heaviest?

Which coin has the shortest diameter?

Which coin has the longest diameter?

How did you do?Here are the mass and diameter of British coins. Diameter

means the length across the middle of the coin.

Coin Diameter Mass

£2 28.4mm 12g

£1 23.4mm 8.8g

50p 27.3mm 8g

20p 21.4mm 5g

10p 24.5mm 6.5g

5p 18mm 3.3g

2p 25.9mm 7.1g

1p 20.3mm 3.6g

Which coin is the lightest?

5p

Which coin is the heaviest?

£2

Which coin has the shortest diameter?

5p

Which coin has the longest diameter?

£2

British Coins

Order the coins by mass, starting at the coin with the smallest mass:

Coin Diameter Mass

£2 28.4mm 12g

£1 23.4mm 8.8g

50p 27.3mm 8g

20p 21.4mm 5g

10p 24.5mm 6.5g

5p 18mm 3.3g

2p 25.9mm 7.1g

1p 20.3mm 3.6g

5p 1p 20p 10p 2p 50p £1 £2

How did you do?

Order the coins by mass, starting at the coin with the smallest mass:

Coin Diameter Mass

£2 28.4mm 12g

£1 23.4mm 8.8g

50p 27.3mm 8g

20p 21.4mm 5g

10p 24.5mm 6.5g

5p 18mm 3.3g

2p 25.9mm 7.1g

1p 20.3mm 3.6g

1p, 5p, 20p, 10p, 2p, 50p, £1 & £2

British Coins

Order the coins by diameter, starting with the coin with the smallest

diameter:

Coin Diameter Mass

£2 28.4mm 12g

£1 23.4mm 8.8g

50p 27.3mm 8g

20p 21.4mm 5g

10p 24.5mm 6.5g

5p 18mm 3.3g

2p 25.9mm 7.1g

1p 20.3mm 3.6g

5p 1p 20p £1 10p 2p 50p £2

How did you do?

Order the coins by diameter, starting with the coin with the smallest

diameter:

Coin Diameter Mass

£2 28.4mm 12g

£1 23.4mm 8.8g

50p 27.3mm 8g

20p 21.4mm 5g

10p 24.5mm 6.5g

5p 18mm 3.3g

2p 25.9mm 7.1g

1p 20.3mm 3.6g

5p, 1p, 20p, £1, 10p, 2p, 50p & £2

Combined Dimensions

Coin Mass

£2 12g

£1 8.8g

50p 8g

20p 5g

10p 6.5g

5p 3.3g

2p 7.1g

1p 3.6g

What would be the combined mass of a 10p coin and a 5p coin??

Let’s add up the whole numbers

first and then the decimals. Then

we can add both answers

together to find the answer to

the question. Whole numbers are

in blue and decimals are in green.

5p + 10p =

6.5g + 3.3g =

6g + 3g = 9g

0.5g + 0.3g = 0.8g

9g + 0.8g = 9.8g

Combined Dimensions

Coin Mass

£2 12g

£1 8.8g

50p 8g

20p 5g

10p 6.5g

5p 3.3g

2p 7.1g

1p 3.6g

What would be the combined mass of a £2 coin, a 10p coin and a 1p

coin??

How did you do?

Coin Mass

£2 12g

£1 8.8g

50p 8g

20p 5g

10p 6.5g

5p 3.3g

2p 7.1g

1p 3.6g

What would be the combined mass of a £2 coin, a 10p coin and a 1p

coin??

£2 + 10p + 1p =

12g + 6.5g + 3.6g =

12g + 6g + 3g = 21g

0.5g + 0.6g = 1.1g

21g + 1.1g =

21g + 1g = 22g

22g + 0.1g = 22.1g

Combined Dimensions

Coin Diameter

£2 28.4mm

£1 23.4mm

50p 27.3mm

20p 21.4mm

10p 24.5mm

5p 18mm

2p 25.9mm

1p 20.3mm

What would be the combined diameter of a 20p coin and a 2p coin? ?

How did you do?

Coin Diameter

£2 28.4mm

£1 23.4mm

50p 27.3mm

20p 21.4mm

10p 24.5mm

5p 18mm

2p 25.9mm

1p 20.3mm

What would be the combined diameter of a 20p coin and a 2p coin? ?

20p + 2p =

21.4mm + 25.9mm =

21mm + 25mm = 46mm

0.4mm + 0.9mm = 1.3mm

46mm + 1.3mm =

46mm + 1mm = 47mm

47mm + 0.3mm = 47.3mm

Calculating with CoinsWhich weighs more, 2p or two 5ps? ?

Coin Diamete

r

Mass

5p 18mm 3.3g

2p 25.9mm 7.1g

How did you do?Which weighs more, 2p or two 5ps? ?

Coin Diamete

r

Mass

5p 18mm 3.3g

2p 25.9mm 7.1g

3.3g + 3.3g =

3g + 3g = 6g

0.3g + 0.3g = 0.6g

6g + 0.6g = 6.6g

7.1g weighs more than 6.6g so 2p weighs more than two 5ps.

Calculating with CoinsIf you lined up some coins, which set of coins would make the longest

line: two 20ps or a 10p and a 5p??

Coin Diameter Mass

20p 21.4mm 5g

10p 24.5mm 6.5g

5p 18mm 3.3g

21.4mm + 21.4mm =

21mm + 21mm = 42mm

0.4mm + 0.4mm = 0.8mm

42mm + 0.8mm = 42.8mm

Two 20ps in a line would

measure 42.8mm.

How did you do?If you lined up some coins, which set of coins would make the longest

line: two 20ps or a 10p and a 5p??

Coin Diameter Mass

20p 21.4mm 5g

10p 24.5mm 6.5g

5p 18mm 3.3g

24.5mm + 18mm =

24mm + 18mm = 42mm

42mm + 0.5mm = 42.5mm

A 10p and a 5p in a line would

measure 42.5mm.

The two 20ps would make a longer line.

Task

Using this table below answer the questions on the following slides.

Hard

Harder

Hardest

HARD

HARDER

HARDEST

AN

SWER

S