math grade 4 mrs. ennis multiplying 1 digit by 2 digits lesson eleven

Math Grade 4Mrs. Ennis

Multiplying 1 Digit by 2 DigitsLesson Eleven

1. 6703 + 2197 + 4506 =

2. 4,607 – J = 1,382

3. 50 x C = 350

4. 13 x 8 =

5. 0 x 6 =

7. I mile =____feet

8. Put <, >, or = in the box.

400 + 6000 + 70 + 3 300 + 6100 + 50 + 23

9. On the first bus to the park, 63 people arrived. On the second bus, 54 people arrived. 19 people left before lunch. How many people were still at the park at lunchtime?

10. Jill and Brent made a visit to the coast. They stayed in Wilmington for 23 days and New Bern for 19 days. How many weeks did they spend at the coast?

Multiplying Two Digit Numbers

Step 1

• Start by writing down your problem.

• Example: 21 X 4

Step 2

• Multiply the ones place

4x1

21 x 4

4

Step 3

• then multiply the tens place 2x4 which is eight

21 x4 8 4

•

Step 1

• Start by writing down your problem.

32 X 3

Step 2

• Start by multiplying the ones place 3x2

32 x 3 6

Step 3

• then multiply the tens place 3x3 which is nine

32 x3 9 6

•

Carrying (Regrouping)

46 x5

5 x 6 = 30

0

35 x 4 = 20

20 + 3 = 23

23

Carrying

52 x8

8 x 2 = 16

6

18 x 5 = 40

40 + 1 = 41

41

Carrying

48 x3

3 x 8 = 24

4

23 x 4 = 12

12 + 2 = 14

14

Carrying

27 x4

4 x 7 = 28

8

24 x 2 = 8

8 + 2 = 10

10

Practice

45x6

38x8

67x3

29x5

41x9

Practice

45x6

38x8

67x3

29x5

41x9

270 304 201 145 369

Online Practice

two digit multiplication (you may want a pencil and paper)

video presentation: two digit multiplication

(watch for review)

Math Fun

Answer:

Answer: 497 x 7 = 49 (this year)5 x 10 = 50 (next year)

Resources:http://mathlearnnc.sharpschool.com/UserFiles/Servers/Server_4507209/File/Instructional%20Resources/G4WW1-4.pdfhttp://www.ixl.com/math/grade-4/multiply-1-digit-numbers-by-larger-numbers

http://www.youtube.com/watch?v=OYYYc7ygd38