Dear Parents,

 

During this last trimester of First Grade, we will continue our math timed tests to assess each student’s ability to meet the CA First Grade math standard of:  “Know the addition facts (sums to 20) and the corresponding subtraction facts and commit them to memory”.  Students who have successfully now passed the test on facts 0-12 will next test on facts 0-16.  We will begin with a pre-test with 40 problems and the students will have five minutes to complete the test.  The tests will be scored and sent home so that you will know which addition and subtraction facts your child needs to memorize, working with you at home, in order to successfully pass the final test on facts up to 16.  Students will need to successfully answer 32 out of the 40 problems in five minutes in order to pass the test and then move on to addition/subtraction facts up to 20.  To be at standard for this last trimester, students need to master memorization of addition/subtraction facts up to 20 by May 31st.  

 

The schedule for the math facts tests for this trimester will be:

 

Thursday, March 22  -   pre-test on facts 13-16

Thursday, April 5  -   test on facts 0-16

Thursdays, April 19 & April 26 -  “next-chance” tests on facts 0-16

 

Thursday, May 3   -     pre-test on facts 17-20

Thursday, May 17  -   test on facts 0-20

Thursdays, May 24 & May 31 -  “next-chance” tests on facts 0-20

Facts 13-20 are shown below.  Memorizing addition and subtraction facts is just as important as memorizing multiplication facts will be in a couple of years.  Math curriculum for your child next year in Second Grade is based upon the premise that students can quickly recall facts to 20.  We strongly recommend working with your child using homemade flash cards, math apps, and/or math computer games to help your child memorize their facts.  (There are links to math games and computer flash cards on our websites.)

Thanks for your support!

Regards,

The First Grade Teaching Team

Facts 13-16

 

13+0, 0+13, 1+12, 12+1, 2+11, 11+2, 3+10, 10+3, 4+9, 9+4, 5+8, 8+5, 6+7, 7+6

13-13, 13-12, 13-11, 13-10, 13-9, 13-8, 13-7, 13-6, 13-5, 13-4, 13-3, 13-2, 13-1, 13-0

 

14+0, 0+14, 1+13, 13+1, 2+12, 12+2, 3+11, 11+3, 4+10, 10+4, 5+9, 9+5, 6+8, 8+6, 7+7

14-14, 14-13, 14-12, 14-11, 14-10, 14-9, 14-8, 14-7, 14-6, 14-5, 14-4, 14-3, 14-2, 14-1, 14-0

 

15+0, 0+15, 1+14, 14+1, 2+13, 13+2, 3+12, 12+3, 4+11, 11+4, 5+10, 10+5, 9+6, 6+9, 7+8, 8+7

15-15, 15-14, 15-13, 15-12, 15-11, 15-10, 15-9, 15-8, 15-7, 15-6, 15-5, 15-4, 15-3, 15-2, 15-1, 15-0

 

16+0, 0+16, 1+15, 15+1, 2+14, 14+2, 3+13, 13+3, 4+12, 12+4, 5+11, 11+5, 6+10, 10+6, 7+9, 9+7, 8+8

16-16, 16-15, 16-14, 16-13, 16-12, 16-11, 16-10, 16-9, 16-8, 16-7, 16-6, 16-5, 16-4, 16-3, 16-2, 16-1, 16-0

 

 

 

Facts 17-20

 

17+0, 0+17, 1+16, 16+1, 2+15, 15+2, 3+14, 14+3, 4+13, 13+4, 5+12, 12+5, 6+11, 11+6, 7+10, 10+7, 8+9, 9+8

17-17, 17-16, 17-15, 17-14, 17-13, 17-12, 17-11, 17-10, 17-9, 17-8, 17-7, 17-6, 17-5, 17-4, 17-3, 17-2, 17-1, 17-0

 

18+0, 0+18, 1+17, 17+1, 2+16, 16+2, 3+15, 15+3, 4+14, 14+4, 5+13, 13+5, 6+12, 12+6, 7+11, 11+7, 8+10, 10+8,

9+9

18-18, 18-17, 18-16, 18-15, 18-14, 18-13, 18-12, 18-11, 18-10, 18-9, 18-8, 18-7, 18-6, 18-5, 18-4, 18-3, 18-2,

18-1, 18-0

 

19+0, 0+19, 1+18, 18+1, 2+17, 17+2, 3+16, 16+3, 4+15, 15+4, 5+14, 14+5, 6+13, 13+6, 7+12, 12+7, 8+11, 11+8, 9+10, 10+9

19-19, 19-18, 19-17, 19-16, 19-15, 19-14, 19-13, 19-12, 19-11, 19-10, 19-9, 19-8, 19-7, 19-6, 19-5, 19-4, 19-3,

19-2, 19-1, 19-0

 

20+0, 0+20, 1+19, 19+1, 2+18, 18+2, 3+17, 17+3, 4+16, 16+4, 5+15, 15+5, 6+14, 14+6, 7+13, 13+7, 8+12, 12+8, 9+11, 11+9, 10+10

20-20, 20-19, 20-18, 20-17, 20-16, 20-15, 20-14, 20-13, 20-12, 20-11, 20-10, 20-9, 20-8, 20-7, 20-6, 20-5, 20-4, 20-3, 20-2, 20-1, 20-0