173 Subtraction Flash Cards Full Box Set | All Facts 0-17 | Color Coded

 AWARD-WINNING: Think Thank Scholar Math Flash Cards have won the 2019 Creative Child Product of the Year Award, 2019 National Parenting Product Award, 2019 Mom's Choice Award, 2019 Family Choice Award, 2019 Tillywig Brain Child Toy Award, 2019 Hot Diggity Award, and the 2019 National Parenting Center Seal of Approval.

LEARN SUBTRACTION:  173 subtracting flash cards for primary school students in kindergarten and grades 1, 2, and 3. All facts 0-17, +2 bonus facts

UNIQUE VISUAL AIDS:  Graphic illustration on back of card helps child clearly understand math fact; also includes color coded minuends for targeted practice

SORT & ORGANIZEExclusive tab system allows adults to organize the cards their child has mastered vs unmastered. Each card includes one rounded corner and is the perfect size for faster sorting and orientation

HIGHEST QUALITY: The pack of laminated math flashcards is made from high quality card stock and comes in an extra-sturdy box for storage

TEACHING & EDUCATION MADE FUNComes with 5 teaching methods and 5 fun learning games. Also includes the full subtraction chart (0-17) for reference


Think Tank Scholar Subtraction Flash Cards provide an easy, smart and effective way to make learning math fun while ensuring your child is prepared for class and tests. These flashcards were specially designed to boost kindergarten, first, second and third grade students’ fact recall and math literacy.

  • Includes all facts 0-17.  This full set of 173 flash cards, includes all 0-17 math facts, with subtraction tables from basic 0-0 to more advanced two digit differences up to 17 including 17-17, plus 2 bonus facts. Most other sets only contain 0-10 or 0-12
  • Cards have one fact per card with the problem on the front and solution on the back. Teach your child to master the simple subtraction to more advanced double digit problems needed for elementary school and beyond
  • Studies show that 65% of people are visual learners and that's why the cards in this set also contain auniquely designed graphic illustration of each fact, which help children visually understand the concept behind the facts, not just the rote memorization of the answer
  • Our extra sturdy innovative box and tab design helps the learner differentiate mastered, semi-mastered, and unmastered equations, allowing them to track their accomplishments and keeping them engaged
  • Non-distracting design, large bold print, and color-coded facts help boys and girls clearly begin to recognize patterns and understand traditional concepts of subtracting
  • These flash cards are made of high quality card stock with a smooth, durable laminated coating; each card has one rounded corner for easy sorting and handling

This set includes 5 fun subtraction games:

  • Alternate Ending: After solving, ask the learner how much they'd have to subtract to get to a different number, i.e. 12-4 = 8, well how much would you have to subtract to equal 6 instead?
  • Inverse: After solving a fact, ask the learner to solve the addition version. i.e. 8-5 = 3, then what is 3+5?
  • And Then Some: After solving a fact, ask the learner to subtract another number. i.e. 12-5 = 7, now subtract 3 more.
  • Slapjack: Lay out 3 cards. Call out the answer to one of the cards. The learner that slaps on the correct fact card wins the card. The learner with the most cards at the end wins.
  • War: Divide the deck in half between 2 players. Draw one card each. The person with the lower answer gets the cards. Person with the most cards at the end wins.


This set includes 5 teaching methods:

  • Using the Tabs: The best way to use this deck is to sort the cards into 3 piles as the learner answers each fact - ones they've Mastered, ones they Kind of Know, and ones they Don't Know Yet. Then after each session, put the cards back into the box using the included tabs to organize the piles. Storing the cards this way allows the learner to target the facts he/she needs to work on as well as easily accessing the ones they had previously mastered to do an occasional refresh.
  • Visual Charts: Each fact card contains a visual graphic on the back illustrating the answer. Reviewing this will help reinforce the math concept behind the subtraction fact and ultimately boost their math literacy as well as their fact recall.
  • Subtraction Chart: Review the included subtraction chart and point out the patterns (i.e. 7-4 = 6-3). This helps learners visualize the concept of subtraction and develop their number sense.
  • Target Minuends: Test all the facts for one minuend at a time - note, each minuend group is color coded to make it easier to find them. Tip: review the subtraction chart for that number first to familiarize the learner, then test with the cards for that minuend in random order.
  • Multiple Minuends: After learner shows proficiency with multiple minuends, test multiple minuends at the same time to increase difficulty.

Think Tank Scholar’s extra design considerations make the difference in beginner and advanced learners’ complete understanding of the math concepts, thus inspiring pride in their knowledge. Here’s to a lifetime love of creative thinking and learning!