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
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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
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