How can I multiply numbers?

1.

Maths
Lesson 26
Learning question: How can I multiply numbers?
•TOP TIPS
In what ways can you show
yourself to be flexible?
Number
Sense
?
•Repeated Addition
•Arrays (Models)
•Helper Facts and
Doubling
•Short multiplication
•Long multiplication
•Grid method
Name stick a student – what number sense will
they decide for the class?

2.

How will you answer this?

3.

What misconceptions did you identify?
A – The pupil has not included the regrouped digits.
B – The pupil has added instead of multiplying.
C – Correct answer
D – The pupil has not recognised that regrouping is needed in this calculation.

4.

Look carefully and write down the answers on
notepaper
What multiplication question does this represent?
How do you know? Could you represent all multiplication questions
like this? How about 34 x 78?

5.

Now think about the short multiplication method we looked at in class yesterday and
complete this.
No, we must choose a way to multiply that makes sense to us.
T Th
x
Th
H
T
O
2
3
0
1
3
How do we use this method? What do we do? Tell your partner.

6.

Everyone
As you don’t have counters
because you are working from
home……..
Use the short multiplication
method – the same as we looked
at in class yesterday!
Set out your sum neatly and
clearly.
Use a ruler.
Work it out.

7.

Everyone - Independent questions
Remember to use RUCSAC if it helps you to work
through the question LOGICALLY.
NEAT CLEAR setting out.

8.

Reasoning – Everyone – Have a go!

9.

Investigate – Everyone – Have a go.
1) Look at the multiplication below. What do you notice about
the first set of numbers and the second set of numbers? How
are they the same? How are they different?
2345 x 6 = 6543 x 2
2) Investigate different examples to prove if this statement is
true or false.

10.

Bring your work in on Monday
We will stick it in your books.