2, 5 and 10 times tables worksheet

Part A: Working out and filling in

1. 1. 9 × 2 = 18

   9 × 2: ×2 is a double, 9 + 9 = 18

2. 2. 10 × 10 = 100

   10 × 10: a whole number ×10 gets a zero on the end, 10 × 10 = 100

3. 3. 10 × 3 = 30

   10 × 3: a whole number ×10 gets a zero on the end, 3 × 10 = 30

4. 4. 8 × 2 = 16

   8 × 2: ×2 is a double, 8 + 8 = 16

5. 5. 2 × 10 = 20

   2 × 10: a whole number ×10 gets a zero on the end, 2 × 10 = 20

6. 6. 10 × 1 = 10

   10 × 1: times 1 leaves a number as it is, so it's 10

7. 7. 5 × 4 = 20

   5 × 4: ×5 is half of ×10, 4 × 10 = 40, 40 ÷ 2 = 20

8. 8. 5 × 11 = 55

   5 × 11: ×5 is half of ×10, 11 × 10 = 110, 110 ÷ 2 = 55

9. 9. 2 × 4 = 8

   2 × 4: ×2 is a double, 4 + 4 = 8

10. 10. 5 × 7 = 35

    5 × 7: ×5 is half of ×10, 7 × 10 = 70, 70 ÷ 2 = 35

11. 11. 3 × 5 = 15

    3 × 5: ×5 is half of ×10, 3 × 10 = 30, 30 ÷ 2 = 15

12. 12. 6 × 5 = 30

    6 × 5: ×5 is half of ×10, 6 × 10 = 60, 60 ÷ 2 = 30

Part B: Word problems

Marking: 2 for the working, 1 for the answer, 1 for the sentence.

1. 13. It takes Chi-keung 12 minutes to walk from home to the park. How many minutes does he walk to the park and back home again? (Answer: 24 minutes)

   One way there, one way back: 2 lots of 12; 2 × 12 = 24

2. 14. Chi-keung saves $5 every week. How many dollars will he have saved after 6 weeks? (Answer: 30 dollars)

   5 × 6 = 30

3. 15. Each box holds 5 pineapple buns. Chi-keung buys 7 boxes. How many pineapple buns does he buy altogether? (Answer: 35 pineapple buns)

   5 × 7 = 35

4. 16. Each box holds 10 egg tarts. May buys 3 boxes. How many egg tarts does she buy altogether? (Answer: 30 egg tarts)

   10 × 3 = 30

5. 17. The chairs in a hall are set out in 12 rows of 10. How many chairs are there altogether? (Answer: 120 chairs)

   10 × 12 = 120

6. 18. Every child has two hands, and each hand has 5 fingers. How many fingers do 5 children have altogether? (Answer: 50 fingers)

   5 × 2 = 10; 10 × 5 = 50