mulyiplaying by 1 digit and 2 digit

​multiplying by 1digit number and 2digit numbers

By Abdullah Omer Maths Teacher

Multiple Choice

26 x 6

• 156
• 126
• 136
• 165

Multiple Choice

18 x 30 =

• 540

• 560

• 600

• 450

Multiple Choice

567 x 25

• 14,175

• 13,845

• 13,075

• 14,065

Multiple Choice

623 x 23

• 20,329

• 18,329

• 14,809

• 2,209

• 14,329

Multiple Choice

1,635 X 9 =

• 23,056

• 14,715

• 37,917

Multiple Choice

What is 356 x 12?

• 713

• 4,272

• 3,892

• 4,162

• 4,732

Multiple Choice

Solve: 63 x 42

• 3078
• 378
• 2646
• 2546

Multiplying 2 digit numbers

Ahmed Mostafa

​Multiplying 3-digit by 2-digit numbers in columns

​372 x 43 =

Multiple Choice

256 × 22=

• 5,622

• 5,632

• 5,532

Multiple Choice

335 x 22 =

• 7,270

• 7,375

• 7,370

​The first thing you do is place the large number (the 3-digit number) above the smaller number (the 2-digit number).

​

​Make sure you line them up so the ones places are in a column, and the tens places are in a column.

Now that we have the numbers lined up, it’s time to start multiplying.

We start with multiplying the ones place column of the lower number: 3 into 372.

Now we start with the ones places in each of the 2- and 3-digit numbers. In our example that is 3 x 2. 3 x 2 = 6.

Next, we multiply the 3 to the tens number in the top number. In our example, it’s 3 x 7. 3 x 7 = 21. Now this a two-digit number, so we need to pay special attention to where the numbers go in the columns. The ten number in our sum: the 2 will need to be carried. Some people put that number on the side, but a better place for the carried number is on top of the hundreds column. That way, you won’t forget it.

In our next equation, we won’t forget that the 2 needs to be added to the sum.

Now, we multiply the hundreds number in the top number by the ones number below. In our example, that is: 3 x 3. 3 x 3 = 9. We also need to add the carried 2. 9 + 2 = 11. As this is the last number on this line, we put 11 under the line.

We also usually put a line through the carried number once used, so as not to confuse ourselves when we work out the tens number multiplications.

Phew, we’re halfway there.

Now, we do the same for the tens. First, let’s add a zero down the ones column before we move onto the tens column. This will help us not get confused over where the numbers for the tens multiplications start on this new line.

Multiply the bottom tens place number with the ones place number in the top number. In our example, that’s 4 x 2. 4 x 2 = 8.

Next is the tens places turn. We multiply 4 x 7 in our example. 4 x 7 = 28. Again, we have a number that needs to be carried – the 2

Finally, we need to multiple the tens value number on the bottom number with the hundreds place number in the top number. That is 4 x 3. 4 x 3 = 12. Let’s not forget the carried number: 12 + 2 = 14.

From here on, we add the two lines of sums:

Remember

Proverbs 3:6 & Philippians 4:13!

​Watch the video on the next slide.

Then you try the next problems.

Multiple Choice

136 x 23 =

• 3,128

• 4,138

• 5,128

Multiplying 1-digit number by 2-digit numbers

• First: Multiply by the units digit

• Second: Multiply by the tens digit

Multiple Choice

Multiply:

23 x 3.

The answer is.....

• 19

• 69

• 79

• 29

Multiple Choice

864 x 31

• 25,684

• 4,346

• 26,564

• 26,784

• 8,640

Multiple Choice

241 x 59

• 3,374

• 13,919

• 14,219

• 14,019

• 14,999

Multiple Choice

256 x 74 =

• 12,924

• 18,944

• 19,944

• 18,024

• 1,024

Multiple Choice

237 x 10

• 23,700

• 2,370

• 23,710

• 237

• 247

Multiple Choice

457 x 99

• 4,113

• 45,182

• 41,130

• 45,243

• 44,583

Multiple Choice

8,954 X 3 =

• 26,862

• 21,048

• 19,900

Multiple Choice

5,796 X 6=

• 25,758

• 11,204

• 34,776

Multiple Choice

7,912 X 8 =

• 63,296

• 13,232

• 13,738

Multiple Choice

4,052 X 7 =

• 45,830

• 28,364

• 10,208

Multiple Choice

4,142 X 9 =

• 45,830

• 10,208

• 37,278

Multiple Choice

8,618 X 5 =

• 43,090

• 13,738

• 13,232

Multiple Choice

9,930 X 8 =

• 79,440

• 11,943

• 12,244

Multiple Choice

1,327 X 9 =

• 19,900

• 11,943

• 21,048

Multiple Choice

3,061 X 4 =

• 14,715

• 37,917

• 12,244

Multiple Choice

836 X 5 = ?

• 4,180
• 3,130
• 4,080
• 4,150

Multiple Choice

978 X 3 = ?

• 3,934
• 2,924
• 2,914
• 2,934

Multiple Choice

542 X 7 =

• 3,514
• 3,584
• 3,794
• 2,784

Multiple Choice

4,312 x 4 = 

• 18,248
• 17,248
• 16,318
• 16,248

Multiple Choice

123 x 6 =

• 4,738

• 638

• 628

• 738

Multiple Choice

423 X 3

• 1269

• 1900

• 2169

Multiple Choice

489 X 5

• 445
• 2,045
• 2,445

Multiple Choice

755 X 6

• 4,555
• 4,530
• 4,500

Multiple Choice

334 X 6

• 2004

• 2000

• 2899

Multiple Choice

20 x 51 =

• 1051

• 710

• 31

• 1,020

Multiple Choice

32 x 30 =

• 620

• 960

• 900

• 780

Multiple Choice

40 x 22 =

• 900

• 720

• 880

• 875

Multiple Choice

24 x 40 =

• 280

• 750

• 960

• 815

Multiple Choice

34 x 50 =

• 1500

• 1,700

• 2,000

• 840

Multiple Choice

40 x 73 =

• 3,920

• 2,920

• 1,113

• 2,873

Multiple Choice

88 x 30 =

• 2,640

• 2,460

• 3,640

• 8,110

Multiple Choice

75 x 40 =

• 2,000

• 2,800

• 3,000

• 2,900

Multiple Choice

22 x 60 =

• 1,520

• 1,220

• 1,320

• 6,022

Multiple Choice

John sold 36 cookbooks at $27 each. How much did he make? 

• 972
• 324
• 970
• 932

Multiple Choice

22 x 35

• 70
• 770
• 57
• 750

Multiple Choice

47 x 33

• 1551
• 141
• 1431
• 361

Multiple Choice

45 x 10

• 45
• 450
• 4500
• 401

Multiple Choice

Find the product of 64 x 62.

• 512
• 3,868
• 3,968
• 3,948

Multiple Choice

48 x 13

• 624

• 720

• 480

• 192

Multiple Choice

What is the product of 10X22?

• 220
• 120
• 222
• 440

Multiple Choice

What is the product of 20X41?

• 800
• 820
• 160
• 460

Multiple Choice

There are 30 boxes on one of Max’s moving trucks. Each box weighs 36 pounds. How much do the boxes weigh in all?

• 3620 pounds
• 660 pounds
• 900 pounds
• 1080 pounds

Multiple Choice

40 X 40

• 200

• 1600

• 800

• 160

Multiple Choice

80 X 50

• 40

• 400

• 4500

• 4000

Multiple Choice

40 X 50

• 2000

• 20

• 2500

• 20