# Further multiplication

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## Lesson details

### Key learning points

- In this lesson, we will investigate how to find the product of two negative numbers.

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### 7 Questions

Q1.

Which set of words fill in the gaps in order best? Multiplication by a negative _____________ can be visualised as a _________ in the _____________ direction.

scalar, swing, other

scale factor, stretch, positive right

scales, pull, opposite

Q2.

Select the calculation that the red arrow represents in relation to the given arrow of 5 and state the scale factor

(-3) x 5 = -15 s.f: -5

3 x 5 = 15 s.f: 3

3 x 5 = 15 s.f: 5

Q3.

Which number completes the calculation: ____ x 7 = -21

-28

28

3

Q4.

Which number completes the calculation: (-5) x 2 = (-30) + ____

-10

-20

10

Q5.

Calculate 7 x (-2)

-9

14

5

9

Q6.

Calculate 7 x (-1/2)

-14

14

3.5

Q7.

2 + (-4) x 3 =

-18

-24

-6

### 6 Questions

Q1.

Fill in the gaps: Multiplication by a ___________________ can be visualised as a stretch in the ___________________ direction.

negative, same

scale factor, longer

scale, opposite

Q2.

Calculate 2 x (-9)

-7

18

7

Q3.

Calculate (-2) x (-9) x (-1)

-7

18

7

Q4.

Given n=-3 what would the value of 4n be?

-34

-43

1

12

Q5.

Given n=-3 what would the value of -4n be?

-12

-7

43

Q6.

The product of two numbers is 20. What could the two numbers be?

-0.5, 40

-5, 4

10, -2