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· arith-3
Arithmetic & Number Sense · Difference of squares
AMC 8 style
●●○○○ 3/10
~2 min
⏱ 0:00
Compute
999
⋅
1001
999 \cdot 1001
999
⋅
1001
.
difference-of-squares
mental-math
Submit
Hint 1 of 3
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