Name That Number
Elements of Equations
Reading & Writing #s
Reliably Rounding
Illuminating Inverses
100

in the base 10 system, any of the symbols:

0, 1, 2, 3, 4, 5, 6, 7, 8, 9

What are digits?

100

One or two or more numbers that are used to find a sum.

What is an addend?

100

The first number in the number line that gets a hyphen.

What is twenty-one?

100

716,487,250 rounded to the nearest million.

What is 716,000,000?

100

Inverse operation to addition.

What is subtraction?

200

Another name for counting numbers.

What are natural numbers?

200

A number from which something is subtracted during subtraction.

What is a minuend?

200

The punctuation added to numbers when employed as modifiers. 

What is a hyphen?


200

716,487,250 rounded to the nearest ten thousand.

What is 716,490,000?

200

 Operations that undo each other. 

What are inverse operations?

300

Set of counting numbers plus zero. (0, 1, 2, 3, 4...)

What are whole numbers?

300

The result of subtraction.

What is the difference?

300

51723642 spoken.

What is fifty-one million, seven hundred twenty-three thousand, six hundred forty-two written numerically?

300

7,257,289 rounded to the nearest hundred?

What is 7,257, 300?

300

The inverse operation for exponents

What are roots?

400

Set of whole numbers and their opposites

(..., -3,-2,-1,0,1,2,3,...)

What are integers?

400

The number being divided in a division problem.

Eg., the 10 in 10/2=5

What is the dividend?

400

Punctuation mark placed every third digit beginning at the decimal point and moving to the left.

What is a comma?

400

94,365,525 rounded to the nearest thousand?

What is 94, 366, 000?

400

The inverse operation to division

What is multiplication?

500

The Hindu-Arabic system where each digit can have a value between 0 and 9.

What is the Base 10 system?

500

The number that divides in a division problem.

Eg. 2 in 10/2=5

What is a divisor?

500

422 spoken.

What is four hundred twenty-two?

(Please note, four hundred AND twenty-two is incorrect)

500

723,237,789 rounded to the nearest hundred thousand.

What is 723, 200,000?

500

The value of N in:

15 times N=180

What is 12?

M
e
n
u