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Estimation Approximation
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Sum-mer Difference
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100

This is the bottom number of a fraction.

What is the denominator

100

This is the best estimate for 5 7/8 - 3 2/12

What is 6 - 3 = 3

100

Simplify 2/8

What is 1/4

100

This is the sum of 2/3 and 1/3

What is 1

100

This is what my favorite picture by my 5 year old looked like

What is an elephant packing a suitcase

200

This is the top number of a fraction

What is numerator

200

This is the best estimate for 1 3/100 + 2 99/100

What is 1 + 3 = 4

200

Simplify 9/21

What is 3/7

200

This is the difference of 2 5/8 and 2 1/16

What is 9/16

200

This type of triangle has 3 equal angles and 3 equal sides.

What is an equilateral triangle

300

This is a fraction where the numerator is larger than the denominator

What is an improper fraction

300

This is the best estimate for 5 5/9 + 4 4/9

What is 6 + 4 = 10

300

Simplify 5/45

What is 1/9

300

This is the sum of 6 7/10 and 3 1/10

What is 9 4/5

300

This quadrilateral, which often looks like a square that got blown over, has 4 equal sides.

What is a rhombus

400

A fraction that is considered a mixed number has these two parts.

What is a whole number and a fraction

400

This is the best estimate for 13 1/8 - 2 7/10

What is 13 - 3 = 10

400

Simplify 14/28

What is 1/2

400

This is the difference of 3 3/4 and 1 3/4

What is 2

400

Both rectangles and squares have this in common.

What is four 90 degree angles

500

This is the official term for the fraction bar.

What is vinculum

500

This is the best estimate for 120 3/50 - 30 1/100

What is 120 - 30 = 90

500

Simplify 370/510

What is 37/51

500

This is the sum of 5 1/2 and 2 17/50

What is 7 21/25

500

A square is a four-sided figure that can be classified in these four ways.

What is quadrilateral, parallelogram, rectangle, and rhombus