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## Lesson details

### Key learning points

- In this lesson, we will use bar modelling to identify and form inequalities.

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This content is made available by Oak National Academy Limited and its partners and licensed under Oak’s terms & conditions (Collection 1), except where otherwise stated.

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### 5 Questions

Q1.

Fill in the gap: You can use a known equation to form related equations. When forming a related equation you should check that both sides ______.

Connect

Multiply

Sum

Q2.

Given that 5 × 12 = 10 × 6, fill in the gap: 5 x 12 + 5 = 10 x 6 + ___.

10

12

6

Q3.

Given that a = 3b, fill in the gap: 2a = ___b.

3

4

9

Q4.

Given that a = 3b, fill in the gap: a + 3b = ___b.

1

4b

a

Q5.

If c = d + 2, fill in the gap: c - 2 = ___

d - 2

d - 4

d + 2

### 5 Questions

Q1.

Fill in the gaps. We can use the symbols __ and __ to express an inequality.

-, +

=, +

x, y

Q2.

Which inequality represents "a is greater than b"?

a < b

a = b

b > a

Q3.

Which inequality represents "the sum of b and a is less than c"?

a + b > c

b - a < c

c < a + b

Q4.

Which inequality is true when a = 3?

-a > a -2

a < -5

a x a > 5a

Q5.

Which inequality is true when a = -4?

-a < a -2

2a > a

a < -5