Monday, August 10, 2020

Time yourself! Addition and Subtraction

                                                   Time yourself! 

Addition and Subtraction

For this activity you will need to set an online timer. First make your own copy of the doc with your name. Complete each equation. You will then need to check the answers are correct. Do this for each set. Record your time at the bottom of this doc. 


  1. Set One

    1. 12 + 8 = 20

    2. 7 + 9 = 16

    3. 20 - 11 = 9

    4. 15 - 9 =7 

    5. 6 + 14 = 20

    6. 17 - 6 = 11

    7. 19 - 12 = 8

    8. 12 + 5 =17 

    9. 11 - 7 = 4

    10. 13 - 5 =8

    11. 4 + 15 = 19

    12. 18 - 7 =11





  2. Set Two 

    1. 11 + 7 = 18

    2. 8 + 7 = 15

    3. 20 - 9 =11

    4. 15 - 8 =7

    5. 7 + 11 =18

    6. 16 - 9 =7

    7. 17 - 12 = 5

    8. 9 + 7 =16 

    9. 13 - 8 =5

    10. 14 - 9 =5

    11. 6 + 13 = 19

    12. 17 - 8 =10



  3. Set Three

    1. 12 + 8 = 20 

    2. 9 + 6 = 15 

    3. 11 + 8 = 19

    4. 12 + 5 = 17

    5. 14 - 9 = 5

    6. 19 - 8 = 11

    7. 19 - 15 = 4

    8. 6 + 12 = 18 

    9. 13 -  = 4

    10. ? + 8 = 19 

    11. 5 + ? = 16

    12. ? - 9 = 8


  4. Set Four

    1. 45 + ? = 100

    2. 37 + ? = 100

    3. ? + 61 = 100

    4. 78 + ? = 100

    5. 83 + ? = 100

    6. ? + 59 = 100

    7. ? + 72 = 100

    8. 31 + ? = 100

    9. ? + 12 = 100

    10. 17 + ? = 100

    11. ? + 84 = 100

    12. 23 + ? = 100





My time: 12 minutes 


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