Adding, subtracting, × a number Quiz
10 questions · easy to harder · Precalculus · score and step-by-step answers
How it works
- 10 questions, about 30 minutes (a timer counts down; you can hide it). Solve it right here: no sign-up.
- 0 questions have choices. For the others you type the answer: a number like 4, −2, 7/2 or 3.5, or for example x = 4, x = 2 or x = −3, (3, 5), 2x + 1. Use ^ for powers (x^2) and sqrt for √. Any form with the same value counts (7/2 = 3.5).
- One question at a time: Back, Next, Mark for review and the question list at the bottom. A calculator is on the screen.
- At the end: your percent and grade, every question right or wrong, why a wrong choice is wrong, and its step-by-step solution. Then practise the lesson with new questions.
Your answers and results are kept in this browser only, so you can close the page and come back.
1 Question 1
u = <3, −2>, v = <−1, 4>, find u + vType the answer.
2 Question 2
u = <2, 3>, v = <4, −1>, find u + vType the answer.
3 Question 3
v = <1, 3>, find 2vType the answer.
4 Question 4
u = <−2, 1>, v = <5, 3>, find u + vType the answer.
5 Question 5
u = <4, 1>, v = <1, 3>, find u − vType the answer.
6 Question 6
v = <2, −1>, find −3vType the answer.
7 Question 7
u = <−3, 2>, v = <2, −3>, find u + vType the answer.
8 Question 8
u = <2, −3>, v = <−2, 1>, find u + vType the answer.
9 Question 9
u = <1, 2>, v = <2, −1>, find u − 2vType the answer.
10 Question 10
u = <−1, 2>, v = <2, 1>, find 3u + vType the answer.