Math Riddles
Which month has 28 days?
All of them
5 + 6 - 9
2
1/3+1/3=
2/3
How many periods or rows are there on the periodic table?
7
What kind of chemical element hates to be a follower?
Lead
How many sides does a circle have?
Two(the inside and the outside)
(4+5)7
63
Pluto's 3 moons are:
Charon, Nix, Hydra
What does the atomic number mean?
What is black when you buy it, red when you use it and gray when you throw it away?
Charcoal
What occurs twice in a week, once in a year, but never in a month?
The letter e
(2 x 11) - 12 + 2
12
What are the names of the two axes on the coordinate plane?
x axis and y axis
Name five elements of the periodic period.
Ex: hydrogen, helium, lithium, boron, carbon
Give me food and I will live; give me water and I will die. What am I?
Fire
I add five to nine and get two. How?
If you have 9:00 and add five hours, you get to 2:00.
16 + 21 - (6/2)8
61
16-2t+(5t-9)
t=6
25
What are the majority of elements in the periodic table?
Noble gases, nonmetals, metalloids
Many have heard it, but no one has seen it. It will not speak back until spoken to. What is it?
An echo
A duck was given $9, a spider was given $36, and a bee was given $27. Based on this information, how much money would a cat be given?
$18($4.50 per leg)
8 x 18 + 4 - 15
133
What size hole can an adult mouse fit in?
A dime-sized hole
(DIY Science Time fun fact)
How many elements are in the periodic table?
118
(NOT COUNTING POSSIBLE UNUNENNIUM)
Which two periodic elements, when combined, heal?
Helium and Aluminum