Transcript Substituting numbers into expressions and

LO: to be able to substitute numbers into expressions and formulae.
What is bigger when a = 4?
2a
a²
a+a
3a
LO: to be able to substitute numbers into expressions and formulae.
What is bigger when a = 2 and b = 3?
ab
a+b
2a+b
a+2b
LO: to be able to substitute numbers into expressions and formulae.
What is bigger when a = 5 and b = 10?
ab
a+b
a²+b
a+2b
LO: to be able to substitute numbers into expressions and formulae.
Do you recognise any of these formula?
A = ½(L x W)
T = g² + 1
H = 5y + k
W=M÷N
D = 3e + f
V=LxWxH
y = 2z + 3
V = L³
Z = abc
A = L²
L = √A
s = t² - 3
A=LxW
LO: to be able to substitute numbers into expressions and formulae.
How could you put these scenarios into a
formula?
1) You are visiting to Egypt to see the
pyramids. Hotel rooms cost £60 per room
per night plus £10 transfer from the
airport. Write a formula the total cost. How
much would it cost for one person to stay
for 7 nights?
Total Cost = number of nights x £60 + £10
T = 60n + 10
LO: to be able to substitute numbers into expressions and formulae.
How could you put these scenarios into a
formula?
1) To visit the biggest pyramid, it costs
£10 for adults, £6 for children and £5
per group for a guide. Write a formula
for the total cost. How much would it
cost for your family to visit?
Total Cost = (10 x no. of adults) + (6 x no. of children) + £5
T = 10a + 6c + 5
LO: to be able to substitute numbers into expressions and formulae.
Choose a formula and on your brick show how you
substitute numbers into the formula. Pick your own
numbers.
A = ½(L x W) H = 5y + k
D
=
3e
+
f
W=M÷N
T = g² + 1
V=LxWxH
y = 2z + 3
Z = abc s = t² - 3
V = L³
A = L² L = √A A = L x W
End
-a
3a - 6
2a + 5
5a - 5
a² + 2
a² - 5
2a - 1
2a²
4a - 6
a+3
a
a - 10
5a - 10
3a + 1
a² -10
3a - 2
9-a
3a - 8
10 - a
7+a
a-5
a+6
5a
2a - 2
3a - 1
2a + 1
a-2
a²
a+a
Start
a+1
2a
a-1
a+2
3a