Compare and Win!
decimals · estimating sums and differences of decimals
To estimate sums and differences of decimals.
Compare and Win! is a Grade 6 decimal game for estimating sums and differences. Players arrange cards into decimal numbers, use a die to determine whether they will add or subtract, and estimate the result before comparing answers. Because the round winner depends on the estimated value, students must combine place-value sense with reasonable estimation rather than relying only on exact computation.
Use it in a small group when students need practice estimating decimal operations and explaining their rounding choices. Listen for how students decide which place values matter most in an estimate. Create a free Find a Math Game account to generate lesson support for Compare and Win! No credit card is required; 3 lifetime lesson generations are included.
- Grades:
- 6
- Players:
- 2–10 players
- Materials:
- cards, counters, paper
- Classroom use:
- small group
Standards alignment
Official Rules
Verified publisher content. Generate this game's lesson with a free account to unlock the complete Official Rules.
Original Printable
Unlocks when you generate this game's lesson.