Multiply two-digit numbers with an area model

Question 1

For 37 × 46, the area model has four parts: 30 × 40 = 1200, 30 × 6 = ?, 7 × 40 = 280, 7 × 6 = 42. What is the missing part?

Answer 

Question 2

Use an area model to work out 32 × 19.

Answer 

Question 3

For 41 × 25, the area model has four parts: 40 × 20 = 800, 40 × 5 = 200, 1 × 20 = ?, 1 × 5 = 5. What is the missing part?

Answer 

Question 4

Use an area model to work out 22 × 20.

Answer 

Question 5

For 47 × 21, the area model has four parts: 40 × 20 = ?, 40 × 1 = 40, 7 × 20 = 140, 7 × 1 = 7. What is the missing part?

Answer 

Question 6

Use an area model to work out 22 × 15.

Answer 

Question 7

For 26 × 33, the area model has four parts: 20 × 30 = ?, 20 × 3 = 60, 6 × 30 = 180, 6 × 3 = 18. What is the missing part?

Answer 

Question 8

Use an area model to work out 23 × 29.

Answer 

Question 9

For 44 × 12, the area model has four parts: 40 × 10 = ?, 40 × 2 = 80, 4 × 10 = 40, 4 × 2 = 8. What is the missing part?

Answer 

Question 10

Use an area model to work out 25 × 20.

Answer 

Question 11

For 49 × 15, the area model has four parts: 40 × 10 = 400, 40 × 5 = ?, 9 × 10 = 90, 9 × 5 = 45. What is the missing part?

Answer 

Question 12

Use an area model to work out 32 × 24.

Answer 

Question 13

For 21 × 32, the area model has four parts: 20 × 30 = 600, 20 × 2 = 40, 1 × 30 = ?, 1 × 2 = 2. What is the missing part?

Answer 

Question 14

Use an area model to work out 29 × 19.

Answer 

Question 15

For 36 × 31, the area model has four parts: 30 × 30 = 900, 30 × 1 = ?, 6 × 30 = 180, 6 × 1 = 6. What is the missing part?

Answer 

Question 16

Use an area model to work out 18 × 12.

Answer