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