Number properties for mental math Quiz
10 questions · easy to harder · Foundations · score and step-by-step answers
How it works
- 10 questions, about 20 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. No calculator: work it out on paper.
- 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
Calculate 25 × 7 × 4 in your headType the answer.
2 Question 2
Calculate 37 + 48 + 63 in your headType the answer.
3 Question 3
Calculate 6 × 47 in your headType the answer.
4 Question 4
Calculate 26 + 58 + 4 in your headType the answer.
5 Question 5
Calculate 6 × 98 in your headType the answer.
6 Question 6
Write 12 + 18 as a productType the answer.
7 Question 7
Write 24 + 36 as a productType the answer.
8 Question 8
Write 14 + 35 as a productType the answer.
9 Question 9
Calculate 45 + 17 + 55 + 23 in your headType the answer.
10 Question 10
Calculate 7 × 299 in your headType the answer.