Pre-Algebra Solutions

Find the base for which the following statement is true. 35 + 25 = 61

Answer: Base $9$

Jul 16, 2026

Solve the following addition problems with the lattice algorithm. (a) 2,957_ten + 3,482_ten (b) 132_five + 424_five (c) 363_eight + 616_eight

Answer: (a) $2957_{ten} + 3482_{ten} = 6439_{ten}$; (b) $132_{five}

Jul 16, 2026

Omar has a new debit card. He earns 1,800 reward points for spending 300 dollars. At this rate, if Omar earned 600 reward points, how much money did he spend?

Answer: Omar spent $\$100$

Jun 5, 2026

What is the number in standard decimal form? (9x100)+(4x10)+(8x1)+(2x1/10)+(5x1/100)

Answer: $948.25$

May 15, 2026