Number Sense
GENERAL DIRECTIONS
GENERAL DIRECTIONS
This test will last for 10 minutes. There are 80 problems on the test.
This test will last for 10 minutes. There are 80 problems on the test.
Write in ink only! Do not use a pencil.
Write in ink only! Do not use a pencil.
Solve as many problems as you can in the order they appear on the test.
Solve as many problems as you can in the order they appear on the test.
Problems that are skipped are considered wrong. Problems that appear after the last attempted problem do not count against you.
Problems that are skipped are considered wrong. Problems that appear after the last attempted problem do not count against you.
ALL PROBLEMS MUST BE SOLVED MENTALLY! [No scratch work is allowed.]
ALL PROBLEMS MUST BE SOLVED MENTALLY! [No scratch work is allowed.]
Starred (*) problems require integral answers that are within 5% of the exact answer.
Starred (*) problems require integral answers that are within 5% of the exact answer.
Scoring: All problems correctly answered are worth 5 points. Four points will be subtracted for all misses or skips before the last problem attempted.
Scoring: All problems correctly answered are worth 5 points. Four points will be subtracted for all misses or skips before the last problem attempted.
Highest Score Possible - 400 points
Highest Score Possible - 400 points
Study Materials
Study Materials
Reduced Number Sense Book.pptxNumber Sense Tricks Book Updated.pptThese 15 number sense tricks are a great place to start. The above slideshow was borrowed from Frank Elementary's Math Club...some of their more experienced students narrowed down Mr. Thornton's number sense tricks down to the 15 they thought were best for beginner students.
These 15 number sense tricks are a great place to start. The above slideshow was borrowed from Frank Elementary's Math Club...some of their more experienced students narrowed down Mr. Thornton's number sense tricks down to the 15 they thought were best for beginner students.
This slideshow above has over 100 slides, so I would not recommend printing the whole thing out. Choose a few that you want to work on and print those out.
This slideshow above has over 100 slides, so I would not recommend printing the whole thing out. Choose a few that you want to work on and print those out.
Number Sense Tests and Answer Keys From Previous Tournaments
Number Sense Tests and Answer Keys From Previous Tournaments
NS_2011_1.pdfNS_2011_2.pdfNS_2011_3.pdfNS_2012-13_3.pdfNS_2013_1.pdfNS_2013-14_2.pdfNS_2014-15_1.pdfNS_TMSCA_2013-14_1.pdfNS_TMSCA_2013-14_2.pdfNS_TMSCA_2013-14_3.pdf