Unit 6 and 7 Review

Front

How many birds were in the tree to begin with if 34 flew away and 45 are left?

Back

79 birds

Front

What is the length of a paper clip?

Back

4 cm

Front

How long is the crayon in the picture?

Back

2 inches

Front

How many votes did reading and social studies receive together?

Back

9

Front

What is the best estimate for the length of a pencil eraser?

Back

1 centimeter

Front

What is subtraction?

Back

Subtraction is taking one number away from another.

Front

What is addition?

Back

Addition is combining two or more numbers to get a total.

Front

What is measurement?

Back

Measurement is finding out the size, length, or amount of something.

Front

What is an estimate?

Back

An estimate is a rough calculation of a number.

Front

What is a centimeter?

Back

A centimeter is a unit of length in the metric system.