1st Grade Math Flashcards: Relate Counting To Addition And Subtraction

What this deck covers

This deck focuses on Relate Counting To Addition And Subtraction, giving you a quick way to review the definitions, rules, and examples that matter most for 1st Grade Math.

How to use these flashcards

Work through these flashcards in short sessions. Try to answer each prompt before flipping the card, then revisit any cards you miss until the explanation feels automatic.

Flashcard 1: Which number sentence matches counting on: start at $4$ and say $5,6,7$?

Answer: $4+3=7$. Counting $3$ numbers forward from $4$ gives $7$.

Flashcard 2: What is $10-4$ using counting back?

Answer: $6$. Start at $10$ and count back $9, 8, 7, 6$.

Flashcard 3: What is the related subtraction fact for $6+2=8$?

Answer: $8-6=2$. Addition and subtraction are inverse operations.

Flashcard 4: What is $6-6$ using counting back?

Answer: $0$. A number minus itself always equals zero.

Flashcard 5: What is the result of $7-1$ using counting back?

Answer: $6$. Start at 7, count back 1: "6".

Flashcard 6: What number makes this true: 12 -  = 10?

Answer: $2$. Count back from $12$ to $10$: $11, 10$ is $2$ steps.

Flashcard 7: What is the result of $6-4$ using counting back?

Answer: $2$. Start at 6, count back 4: "5, 4, 3, 2".

Flashcard 8: What is $8 + 1$ using counting on?

Answer: $9$. Start at $8$ and count on $1$: $9$.

Flashcard 9: What is $13 - 4$ using counting back?

Answer: $9$. Start at $13$ and count back $4$: $12, 11, 10, 9$.

Flashcard 10: Identify the missing number: 9-=5 (use counting back from $9$).

Answer: $4$. Count from $9$ back to $5$: that's $4$ steps back.

Flashcard 11: What addition fact matches the subtraction $8-2=6$?

Answer: $6+2=8$. Addition and subtraction are inverse operations.

Flashcard 12: What is $6 + 2$ using counting on?

Answer: $8$. Start at $6$ and count on $2$: $7, 8$.

Flashcard 13: What is the result of $9+1$ using counting on?

Answer: $10$. Start at 9, count on 1: "10".

Flashcard 14: What does it mean to count on in $5 + 3$?

Answer: Start at $5$ and say $3$ more numbers: $6, 7, 8$. Counting on means starting at the first number and counting forward.

Flashcard 15: What is $9-2$ using counting back?

Answer: $7$. Start at $9$ and count back $8, 7$.

Flashcard 16: What is $7-0$ using counting back?

Answer: $7$. Subtracting zero doesn't change the number.

Flashcard 17: What is the result of $7+3$ using counting on?

Answer: $10$. Start at 7, count on 3: "8, 9, 10".

Flashcard 18: What is the missing number in the count-back sequence for $9-4$: 9,8,,6,5?

Answer: $7$. Fill in the missing number in the countdown: 9, 8, 7, 6, 5.

Flashcard 19: What is $12 + 5$ using counting on?

Answer: $17$. Start at $12$ and count on $5$: $13, 14, 15, 16, 17$.

Flashcard 20: What is $5+4$ using counting on?

Answer: $9$. Start at $5$ and count $6, 7, 8, 9$.

Flashcard 21: What is $4+0$ using counting on?

Answer: $4$. Adding zero doesn't change the number.

Flashcard 22: What number makes this true:  + 4 = 11?

Answer: $7$. Count back from $11$ to find what plus $4$ equals $11$.

Flashcard 23: What is $6-5$ using counting back?

Answer: $1$. Start at $6$ and count back $5, 4, 3, 2, 1$.

Flashcard 24: What is the related subtraction fact for $5 + 6 = 11$?

Answer: $11 - 5 = 6$. Addition and subtraction are inverse operations.

Flashcard 25: What is the missing number in the count-on sequence for $5+3$: 5,6,7,?

Answer: $8$. Continue the counting sequence: 5, 6, 7, 8.

Flashcard 26: What is $10 + 3$ using counting on?

Answer: $13$. Start at $10$ and count on $3$: $11, 12, 13$.

Flashcard 27: Identify the missing number: 3+=7 (use counting on from $3$).

Answer: $4$. Count from $3$ to $7$: that's $4$ steps forward.

Flashcard 28: Find and correct the error: Counting on for $5+2$ gives $6$.

Answer: Correct sum: $5+2=7$. Should count $6, 7$ not just $6$.

Flashcard 29: What is $0+9$ using counting on?

Answer: $9$. Zero plus any number equals that number.

Flashcard 30: What is the related addition fact for $9-4=5$?

Answer: $5+4=9$. Adding back what was subtracted gives the original number.

Flashcard 31: Which addition fact matches counting back $2$ from $9$?

Answer: $7 + 2 = 9$. Counting back $2$ from $9$ gives $7$, so $7 + 2 = 9$.

Flashcard 32: What is $11 - 1$ using counting back?

Answer: $10$. Start at $11$ and count back $1$: $10$.

Flashcard 33: What is $9 - 3$ using counting back?

Answer: $6$. Start at $9$ and count back $3$: $8, 7, 6$.

Flashcard 34: What is the result of $10-5$ using counting back?

Answer: $5$. Start at 10, count back 5: "9, 8, 7, 6, 5".

Flashcard 35: What is the result of $5+4$ using counting on?

Answer: $9$. Start at 5, count on 4: "6, 7, 8, 9".

Flashcard 36: What is $14 - 2$ using counting back?

Answer: $12$. Start at $14$ and count back $2$: $13, 12$.

Flashcard 37: Identify the missing addend by counting on: 8 +  = 13.

Answer: $5$. Count on from $8$ to $13$: $9, 10, 11, 12, 13$ is $5$ steps.

Flashcard 38: What is $7 + 4$ using counting on?

Answer: $11$. Start at $7$ and count on $4$: $8, 9, 10, 11$.

Flashcard 39: What is the result of $8+2$ using counting on?

Answer: $10$. Start at 8, count on 2: "9, 10".

Flashcard 40: What number makes this true: 6 +  = 9?

Answer: $3$. Count on from $6$ to $9$: $7, 8, 9$ is $3$ steps.

Flashcard 41: What does it mean to count on to find $6+2$?

Answer: Start at $6$ and say $7,8$; the sum is $8$. Count forward from the first number by the amount of the second number.

Flashcard 42: Identify the missing subtrahend by counting back: 16 -  = 12.

Answer: $4$. Count back from $16$ to $12$: $15, 14, 13, 12$ is $4$ steps.

Flashcard 43: What is the result of $10-2$ using counting back?

Answer: $8$. Start at 10, count back 2: "9, 8".

Flashcard 44: What is $7+3$ using counting on?

Answer: $10$. Start at $7$ and count $8, 9, 10$.

Flashcard 45: What is $8+2$ using counting on?

Answer: $10$. Start at $8$ and count $9, 10$.

Flashcard 46: What is $15 - 5$ using counting back?

Answer: $10$. Start at $15$ and count back $5$: $14, 13, 12, 11, 10$.

Flashcard 47: What is the result of $6+2$ using counting on?

Answer: $8$. Start at 6, count on 2: "7, 8".

Flashcard 48: What subtraction fact matches counting on from $7$ to $10$?

Answer: $10 - 7 = 3$. Counting on $3$ from $7$ gives $10$, so $10 - 7 = 3$.

Flashcard 49: What does it mean to count back to find $9-3$?

Answer: Start at $9$ and say $8,7,6$; the difference is $6$. Count backward from the first number by the amount being subtracted.

Flashcard 50: What does it mean to count back in $9 - 2$?

Answer: Start at $9$ and say $2$ numbers back: $8, 7$. Counting back means starting at the first number and counting backward.

Flashcard 51: What subtraction fact matches the addition $4+5=9$?

Answer: $9-5=4$. Addition and subtraction are inverse operations.

Flashcard 52: What is the result of $9-3$ using counting back?

Answer: $6$. Start at 9, count back 3: "8, 7, 6".

Flashcard 53: Which number sentence matches counting back: start at $8$ and say $7,6$?

Answer: $8-2=6$. Counting $2$ numbers back from $8$ gives $6$.

Flashcard 54: What is the related subtraction fact for $6+2=8$ that subtracts $2$?

Answer: $8-2=6$. Subtracting the addend gives the other addend.