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Addition: Single Digit (No Carry)
776
3 attempts · 100% accuracy · 3.1s median
Addition: Single Digit (With Carry)
772
8 attempts · 88% accuracy · 33.7s median
Subtraction: Single Digit (No Borrowing)
790
7 attempts · 86% accuracy · 11s median
Subtraction: Two Digit (With Borrowing)
792
8 attempts · 88% accuracy · 40.7s median
Multiplication: Single Digit
796
8 attempts · 100% accuracy · 5.1s median
Division: Exact Division
821
8 attempts · 88% accuracy · 23.4s median
Mixed Operations (Basic)
824
7 attempts · 100% accuracy · 30.3s median
Two-Digit Addition
841
8 attempts · 88% accuracy · 15.1s median
Two-Digit Subtraction
854
16 attempts · 69% accuracy · 8s median
Decimals: Addition
870
9 attempts · 78% accuracy · 74.6s median
Multiplication: Two-Digit × One-Digit
932
3 attempts · 67% accuracy · 11.1s median
Square Numbers (1–20)
932
3 attempts · 67% accuracy · 4.4s median
Addition with Negative Numbers
996
19 attempts · 37% accuracy · 4.1s median
Vertical Addition
952
1 attempts · 100% accuracy · 7.7s median
Vertical Subtraction
1043
2 attempts · 100% accuracy · 6.5s median
Solve for x (Addition)
1052
1 attempts · 100% accuracy · 134.2s median
Solve for x (Subtraction)
1052
1 attempts · 100% accuracy · 4.4s median
Square Roots (Perfect Squares)
1052
1 attempts · 100% accuracy · 3.3s median
Evaluate Linear Expression
1060
0 attempts
Expand Expression
1060
0 attempts
Decimal Subtraction
952
1 attempts · 100% accuracy · 11.4s median
Multiply by 10, 100, 1000
952
1 attempts · 100% accuracy · 5.9s median
Division by 10, 100, 1000
952
1 attempts · 100% accuracy · 6.5s median
Absolute Value
952
1 attempts · 100% accuracy · 4.5s median
Compare Numbers
952
1 attempts · 100% accuracy · 5s median
Powers of Two
952
5 attempts · 60% accuracy · 6.3s median
Multiply Two Decimals
952
1 attempts · 100% accuracy · 13.3s median
Order of Operations (No Brackets)
952
1 attempts · 100% accuracy · 7.1s median
Order of Operations (With Brackets)
953
1 attempts · 100% accuracy · 7.6s median
Sum of Squares
953
1 attempts · 100% accuracy · 5.1s median
Difference of Squares
953
1 attempts · 100% accuracy · 39.1s median
Cube Numbers
953
1 attempts · 100% accuracy · 292s median
Cube Roots (Perfect Cubes)
957
2 attempts · 50% accuracy · 186.4s median
Multiply Mixed Signs
954
5 attempts · 60% accuracy · 3.6s median
Factorial (Small)
1060
0 attempts
Modulo Operation
1060
0 attempts
Pattern Sequence (Arithmetic)
1060
0 attempts