Maths – Friday 15th January
This is the second part of the lesson about multiplying two 2-digit numbers. You may have already done the first part of the worksheet so this gives you the chance to finish questions 5 onwards.
TEACHING SLIDES
WORKSHEET
CHALLENGE
Is this true or false? Investigate!
Is this true of other examples?
I have done 1-9 at school but now Im at home so here is the
True or False
It is true as all the numbers will be timesed by the same numbers just in a different order.
Can you show that 62 x 54 and 64 x 52 are the same?
Mr Bushell
1. 31×22=682
2. 12×14=168
23×13= 299
3. 744- one of the exchanges was 100 added to 600 which made 700
4. 25×15=375
36×12=372
5. 832
6. 392
432
770
1620
7. 480
31×25=775
18×26=468
8. 32
9. 23×45=1035
I can find 7.
There are at least 5 answers between 1000-1500.
True.
Hello Hargun
Check 4b – 36 x 12.
Check 7a – 21 x 24
Well done for finding some products between 1,000 and 1,500 for question 9. Can you show them all?
Is there a way of knowing if you have got them all?
Mr Bushell
1) 1 8 6 681
2) 108 209
3) 20 4 30 1 4 12 6
The exange is exchanging 10 tens to 1 100
526
4) 325 432
5) 832
6) 392 432 770 1620
7) 504 468 775
8) 32
9) 52×43=2236
True
Hello Franek
There are a few to check here.
4b is fine but take a look at the others on this first side (questions 1 to 4).
Mr Bushell
maths:
1. there are 3 ones all together
there are 5 tens all together
there are no hundreds
31×22=682
2. a) 168 b) 299
3. there are 5 ones all together
there are 5 tens all together
there are no hundreds
b) none
a) 744
4. a) 375 b) 432
5. 832
6. a) 392 b) 432 c) 770 d) 1620
7. 504 775 468
8. 32
9. 352×4=1408
Great work Kiran.
For question 1, check the picture for how many ones, tens and hundreds there are – this should equal 682.
Well done for finding a product between 1,000 and 1,500 for question 9. Are there any more?
Mr Bushell
true because 64×52=3328 and 52×64=3328
Did you expect this to be true?
that’s kinda hard but we need know our maths anyway
7×6=42
70×6=420
60×7=420
70×60=4200
26
×15
130
260
390
21×12=252
34×23=782
23×22=506
64×52=3328
52×64=3328
1. There are 3 ones altogether
There are 9 tens altogether
There are 7 hundred altogether
31 x 22 = 682
2. 12 x 14 = 168
23 x 13 = 299
3. Have done that on paper
4. 25 x 15 = 375
36 x 12 = 432
Hello Talal
For question 1, check how many ones, tens and hundreds there are in the picture. This should make the product (in this case, 682).
Mr Bushell
i keep getting the wrong answer for question 6c please can you help me?
Is that the question 28 x 14?
Hello Lily.
Try doing the 4 parts separately and then adding them to make the whole:
30 x 20
30 x 2
5 x 20
5 x 2
Let me know if it works.
Mr Bushell
Maths work sheet
1. 5 ones
5 hundreds
13 tens
735
2.A=168
B.=299
3.A 9 ones
19 tens
6 hundred
C.=744
4. A=375
B. =432
Hello Mia
Good effort.
Check question 1. In the picture, only count the cubes that are in the main section. Those on the outside are there to show you what you are multiplying by.
Mr Bushell
1) 2 ones 3) 31 x 24 5) 832
8 tens 4 ones
6 hundreds =682 4 tens
7 hundreds = 744 6) 32
2) 168 4) 375
299 432
Well done Ellis.
I can’t quite match each answer to its question but most of the numbers look to be what they should be?
Do you think that 64 x 52 and 62 x 54 would give the same product?
Mr Bushell
i finish it already it was actually easy for me
Can you do 31 x 27?
7×6=42
70×6420
60×7=420
70×60=4200
26×15=390
21×12=232
34×23=782
53×19=1007
52×64=3328 and 64×52 are the same answer.
23×22=506
Hello Jayden
Well done.
Check 21×22.
Did it surprise you that 52 x 64 and 62 x 54 give the same product?
Mr Bushell