ISEE Lower Level Mathematics Achievement Flashcards: Whole Number Addition Subtraction

What this deck covers

This deck focuses on Whole Number Addition Subtraction, giving you a quick way to review the definitions, rules, and examples that matter most for ISEE Lower Level Mathematics Achievement.

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: What is the difference $5{,}000 - 2{,}938$?

Answer: $2{,}062$. Subtraction aligns place values, borrows across multiple zeros from the thousands place.

Flashcard 2: What is the sum $999 + 999$?

Answer: $1{,}998$. Addition of two 999s requires carrying 1 from each place value to the next.

Flashcard 3: What is the sum $125 + 79$?

Answer: $204$. Addition aligns place values, carries over from units (5+9=14) and tens (2+7+1=10) to hundreds.

Flashcard 4: What is the difference $1{,}500 - 999$?

Answer: $501$. Subtraction aligns place values, requires borrowing across places to subtract 999.

Flashcard 5: What is the difference $72 - 35$?

Answer: $37$. Subtraction aligns place values, subtracts units (2-5 requires borrow, 12-5=7), then tens (6-3=3).

Flashcard 6: What is the difference $15 - 9$?

Answer: $6$. Subtraction finds the difference by taking away 9 from 15 without borrowing.

Flashcard 7: What is the sum $2{,}346 + 1{,}709$?

Answer: $4{,}055$. Addition aligns place values, carries over multiple times from units through thousands.

Flashcard 8: What is the sum $12{,}345 + 54{,}321$?

Answer: $66{,}666$. Addition aligns place values, resulting in 6 in each digit due to the specific number patterns.

Flashcard 9: What is the sum $3{,}508 + 492$?

Answer: $4{,}000$. Addition aligns place values, with multiple carries leading to a round number.

Flashcard 10: What is the difference $10{,}000 - 1$?

Answer: $9{,}999$. Subtraction of 1 from 10,000 requires borrowing across all place values.

Flashcard 11: What is the difference $2{,}000 - 1{,}999$?

Answer: $1$. Subtraction of 1,999 from 2,000 requires borrowing across all places, leaving 1.

Flashcard 12: What is the sum $560 + 440$?

Answer: $1{,}000$. Addition aligns place values, with carrying from tens (6+4=10) to hundreds.

Flashcard 13: What is the sum $36 + 48$?

Answer: $84$. Addition aligns place values, adds units (6+8=14, carry 1), then tens (3+4+1=8).

Flashcard 14: What is the difference $300 - 168$?

Answer: $132$. Subtraction aligns place values, borrows for units (0-8) and tens (0-6) from hundreds.

Flashcard 15: What is the sum $8 + 7$?

Answer: $15$. Addition combines the two single-digit numbers directly without carrying.

Flashcard 16: What is the difference $4{,}000 - 2{,}005$?

Answer: $1{,}995$. Subtraction aligns place values, requires borrowing from thousands for units and subsequent places.

Flashcard 17: What is the difference $800 - 275$?

Answer: $525$. Subtraction aligns place values, requires borrowing for units and tens from hundreds.

Flashcard 18: What is the sum $6{,}666 + 3{,}334$?

Answer: $10{,}000$. Addition aligns place values, with carries in every place leading to 10,000.

Flashcard 19: What is the difference $6{,}200 - 1{,}200$?

Answer: $5{,}000$. Subtraction aligns place values, subtracting equal amounts from thousands and hundreds without borrowing.

Flashcard 20: What is the sum $407 + 95$?

Answer: $502$. Addition aligns place values, carries from units (7+5=12) and tens (0+9+1=10) to hundreds.

Flashcard 21: What is the difference $9{,}000 - 4{,}567$?

Answer: $4{,}433$. Subtraction aligns place values, requires borrowing from thousands for each lower place.

Flashcard 22: What is the sum $9{,}999 + 1$?

Answer: $10{,}000$. Addition of 1 to 9,999 causes carrying over through all digits to reach the next power of 10.

Flashcard 23: What is the sum $7{,}070 + 930$?

Answer: $8{,}000$. Addition aligns place values, with carries from units and tens to reach a round thousand.

Flashcard 24: What is the sum $4{,}321 + 678$?

Answer: $4{,}999$. Addition aligns place values, with carries in units, tens, and hundreds resulting in all 9s.

Flashcard 25: What is the difference $1{,}000 - 475$?

Answer: $525$. Subtraction aligns place values, borrows across zeros for units (0-5) and tens (0-7) from thousands.