# Maths – Friday 8th January

Today’s lesson looks at multiplying 4-digit numbers by a 1-digit number. Watch the teaching slides – don’t forget to pause them and rewind whenever you need to. Then, complete the worksheet questions when prompted.

There are also some further questions for you to work on, if you finish everything else.

This should take 1 hour.

LEARNING SLIDES

WORKSHEET

CHALLENGE 1 CHALLENGE 2 ### 32 thoughts on “Maths – Friday 8th January”

• 8th January 2021 at 9:16 am

challenge 1
1432
x 4
416128
the thing that alex has done wrong he didn’t move to the left any numbers.
challenge 2
1234
x 5
60870

• 10th January 2021 at 3:32 pm

What is the word beginning with “e” that refers to numbers “moving to the left” (e.g. 10 ones becomes 1 ten)?

• 8th January 2021 at 9:54 am

Alex has not exchanged the 1 forward.

I can’t do the second one.

• 10th January 2021 at 3:30 pm

Keep trying on the second challenge.

• 8th January 2021 at 10:03 am

Challenge 1
=Alex done the wrong thing
Challenge 2
2,000
X. 5
=10,000
1.no2.no3.no

• 10th January 2021 at 3:30 pm

Hello Michael

What mistake did Alex make?

Mr Bushell

• 8th January 2021 at 10:14 am

Maths
1. 9 ones
3 tens
6 hundred
6 thousand
6’639

2. 2102×4=8408

3. 8856

4. The mistake was that she didn’t add the zero.
7290

5. 3126×3=9378
4812×2=9624
4132×6=24’792
1502×5=7510

6. No, No, because 0 times anything is…0!

7. 2846×2= 5692
2846×4= 11’384
2846×8=22’768
I notice that they are doubling from 2 to 8(the factors).

8. You can do 2480-248 which equals 2152
9. I can find 10 and is possible to find more!
The closest product is 7595 which was 245×31!

Challenge-
She hasn’t regrouped or renamed

6789×5=33945!

• 10th January 2021 at 3:35 pm

Hello Hargun

For question 8, check your working out for 2,480 – 248. Then decide which method you found easier.

Keep investigating question 9 . There is an even closer product to 8,000!

Well done

Mr Bushell

• 8th January 2021 at 10:19 am

2345
× 5
11725
Mum helped me.

• 8th January 2021 at 10:20 am

1) 9 3 6 6 6639
2) 8448
3) 8856
4) No mistake except that she didn’t carry the hundred, the correct answer is 729
5) a)9378 b)8424 c)24782 d)7510
6) NOOOOOOOOOOOOOOOOOOOOOOO, EVERYTHING TIMSED BY 0 = 0!!!
7) 5692 11384 22768
8) 2232, the Formal Method was easier
Challenge
1) He didn’t carry
2)

• 10th January 2021 at 3:29 pm

Hello Franek

Check question 2.

For question 4, Nijah has made a very big mistake. Look carefully at the question (2,430 x 3) and the answer (729). Do they look correct? Try to work out the mistake.

Check 5b.

Don’t forget question 9 and challenge 2.

Mr Bushell

• 8th January 2021 at 10:41 am

Good morning, hope your having an amazing day 😊

~1~
There are 3 ones all together.
There are 1 tens all together.
There are 2 hundreds all together.
There are 2 thousands all together.

2213×3= 6639

~2~
2102×4= 8408

~3~
2214×4=8856

~4~
Nijah made the mistake by going down

~5~
3126×3=9378
4812×2=9624
4132×6=13564
1502×5=7510

• 10th January 2021 at 3:24 pm

Hello Saheera.

For question one, the answer is correct but think about have many ones, tens, hundreds and thousands there are all together. Each digit has been multiplied by 3.

Try to explain Nijah’s mistake in question 4. What is wrong with their working out?

Check 5c – the others in question 5 are fine.

Mr Bushell

• 8th January 2021 at 12:05 pm

Have sent Cody’s maths via email 🙂

• 10th January 2021 at 3:10 pm

Thank you!

• 8th January 2021 at 12:09 pm

1. There are 9 ones altogether
There are 3 tens altogether
There are 6 hundreds altogether
There are 6 thousands altogether

2. 2102 x = 8408

3. 2214 x 4 = 8820

4. The mistake Najah made was she did hundreds instead of thousands.

5. 3126 x 3 = 9324
4812 x 2 = 9624
4132 x 6 = 24830
1502 x 5 = 7510

6. I do not agree with Ron
Ron could have used his brain

7. 2846 x 2 = 5692
2846 x 4 = 11384
2846 x 8 = 22768

9. My closest method to 8000 is 4135 x 2 = 8270.

• 10th January 2021 at 3:19 pm

Well done Talal.

Overall, you show a good understanding of this step.

For question 5, check a and c.

For question 6, think about what we know about multiplying by zero. Why would Ron not have to use the column method?

Don’t forget to have a go at the challenges too.

Mr Bushell

• 8th January 2021 at 12:11 pm

Maths
20+20+20+20=80
4×20=80
4×200=800
4×400=1600
3223×3=9669
2114×3=6342
Worksheet
9
3
6
6
2213x=6639

2102×4=8408

8856

There is no thousands

Challenge 1
she has in the tens and hundreds coloums there is 16 and 12

challenge 2
16625

• 10th January 2021 at 3:09 pm

Well done Malaki

Don’t forget to do the second half of the worksheet. There are also questions 5 to 8.

For question 4, think about why there are no thousands. Why has Nijah made this mistake?

Mr Bushell

• 8th January 2021 at 12:42 pm

i have done my work here are the answers
1a) there are 9 ones altogether
1b) there are 3 tens altoghether
1c) there are 6 hundres altoghether
1d) there are 6 thosands altoghether
1e) 2,213x 3=6,639
2)2,102×4=8408
3) 2,214×4=8856
4) nijah has made the mastake of puting the tens in the ones column and the hundreds in the tens and the thousands in the hundreds
5a) 3126×3=9378
5b) 4812×2=9624
5c)4132×6=24,762
5d) 1502×5=7510
6) you could estimate the asnwer then once you’ve done that cheek your asnwer
7) Alex has put the two digit numbers in one box in sted of carrying it over
8) 2345×5=11,725

• 10th January 2021 at 3:06 pm

Hello Lily

Well done, you have shown that you are able to do this step.

Check question 5c – you have just made a small error in your working out.

For question 6, think about what we know about multiplying any number by zero.

Good work!

Mr Bushell

• 8th January 2021 at 12:57 pm

Worksheets:
1. There are 9 ones altogether
There are 3 tens altogether
There are 6 hundreds altogether
There are 6 thousands altogether
2213×3=6639

2. 2102×4=8408

3. 2214×4=8840

4. 2430×3=7290
She put the counters in the wrong columns

5.
a) 3126×3=9386
b) 4812×2=9624
c) 4132×6=24792
d) 1502×5=7510

6.
I don’t agree with Ron as something times 0 is nothing so the answer is 0 not 7423.

7. 2846×2=5692
2846×4=11389
2846×8=22478
Yes, you can time them by 2

8. 248×10=2480

9. 1234×5=6170
How many products: 25
The closest to 8000 is 4135×2=8260

Challenge 1:
Alex has done it wrong as he put tens and hundreds incorrectly

• 10th January 2021 at 3:01 pm

Hello Alex

Overall you have done well and show a good understanding of this step.

Have another look at question 3 – I think you may have miscounted the ones.

Look again to at question 7 b and c.

For question 8, try to explain how 248 x 10 can be used to work out 248 x 9.

Question 9 – check 4,135 x 2 again.

Mr Bushell

• 8th January 2021 at 2:22 pm

Maths worksheet

1.
There are 9 ones
There are 3 tens
There are 6 hundreds
There are 6 thousands
2213 times 3 = 6639

2. 2102 times 4 = 8408

3. 2214 times 4 = 8856

4. Nijah did put 343 times 3 and not 2430 times 3.

5.
a. 3126 times 3 = 9378
b. 4812 times 2 = 9624
c. 4132 times 6 = 24792
d. 1502 times 5 = 7510

6. 7423 times 0 = 0
I agree there is no quicker way

7. 2846 times 2 = 5692
2846 times 4 = 13804

8. 248 times 9 = 2232

• 10th January 2021 at 2:53 pm

Hello Mia

Good work overall.

For question 6, think about why we don’t have to do the column method to work out 7,423 x 0. What do we already know about multiplying by zero?

Check question 7b and then try 7c.

For question 8, try to think about how 248 x 10 can be used to work out 248 x 9.

Well done – you have a good understanding of this step.

Mr Bushell

• 8th January 2021 at 6:56 pm

• 10th January 2021 at 2:47 pm

Great!

• 8th January 2021 at 6:58 pm

3-the answer to the sum Mr bushel is … 8856

• 10th January 2021 at 2:47 pm

It sure is Imaobong! Well done.

Mr Bushell

• 8th January 2021 at 6:59 pm

• 8th January 2021 at 8:40 pm

Maths 8th January
1-there are 9 ones
There are 3 tens
There are 6 hundreds
There are 6 thousands

• 