# 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**

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

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

Check your answer to challenge 2.

Alex has not exchanged the 1 forward.

I can’t do the second one.

Keep trying on the second challenge.

Challenge 1

=Alex done the wrong thing

Challenge 2

2,000

X. 5

=10,000

1.no2.no3.no

Hello Michael

What mistake did Alex make?

Mr Bushell

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!

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

2345

× 5

11725

Mum helped me.

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)

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.

Great answer for question 6!

Don’t forget question 9 and challenge 2.

Mr Bushell

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

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

Have sent Cody’s maths via email 🙂

Thank you!

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.

The correct answer is 7290

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

8. Answer is 2232

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

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

Maths

1st task

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

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

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

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

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

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

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.

The correct answer is 7290

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

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

2-the answer is 8408

Great!

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

It sure is Imaobong! Well done.

Mr Bushell

3- answer is 8856

Maths 8th January

1-there are 9 ones

There are 3 tens

There are 6 hundreds

There are 6 thousands

Well done.

So what is the answer to the calculation 2,213 x 3 ?

Mr Bushell