Pre-Algebra Solutions

Draw an arrow to show the following numbers on the number line (0 to 10000): a) 8000 b) 2500 c) 3900 d) 1200 e) 7600 f) 5800

Answer: Arrow positions from left to right: 1200 (12% along), 2500 (

Sep 30, 2026

9^16 / 9^17

Answer: $\dfrac{1}{9}$

Sep 28, 2026

4^10 / 4^12

Answer: $\frac{1}{16}$

Sep 28, 2026

sqrt(17/9)

Answer: $\dfrac{\sqrt{17}}{3} \approx 1.374$

Sep 28, 2026

sqrt(605) / sqrt(5)

Answer: $11$

Sep 28, 2026

A machinist can produce 114 parts in 6 minutes. At this rate, how many parts can the machinist produce in 15 minutes?

Answer: 285 parts

Sep 14, 2026

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