Owens' Unit 1 Review

Number Sense

100

What is 4,698 rounded to the nearest thousand?

5,000

200

What is 48,300  rounded to the nearest ten-thousand?

50,000

300

Comparison:

3 thousand  ____ 3,000

2,100 _____ 2,000-100

9[10,000] ______ 90,000

<, >, =

400

Use an estimation strategy to solve the following:

44 + 448 + _____

40 + 450 = 490; 50 + 450 = 500

500

Which expanded form shows 3,458?

a) 3[1000s] + 4[100s] + 5[10s] + 8[1s]

b) 300 + 400 + 50 + 8

C) 3,000 + 400 + 50 + 8

a and c

Lines, Line Segments, Rays

100

Dots on a line are called _____

points

200

A line segment contains 2 ___ ___.

end points

300

The difference between a line and a line segment are (name 2):

1) A line goes on forever and a line segment does not

2) A line segment contains two endpoints, while lines have arrows showing they continue on in either direction 

400

A ray contains both _______ and ______.

An end point and an arrow

500

The difference between rays and line segments or lines is: ________

Rays have specific naming rules. The end point is always the first letter in the name of a ray. The second letter can be any other point on the ray

Perimeter

100

A square has a side length of 3 feet. What is its perimeter

12 feet

200

The formula for perimeter is:

p = l + l + w + w

p = 2l + 2w

p = 2 * (l + w)

300

The prefix 'peri' in perimeter means ______

"around" or "about"

400

Jerry wants to build a fence around his garden. He wants the garden to be 8 feet long and 4 feet wide. What is the perimeter of his garden (don't forget units)

24 feet

500

Eric's car travels about 256 miles on a tank of gas. With a full tank, he drives 66 miles to visit Ms. Owens and 78 miles to visit Ms. Hilton. How many more miles can Eric drive before he runs out of gas? (Don't forget units)

112 miles

Subtraction

100

85 - 38 = ______

47

200

506 - 187 = _____

319

300

     4[100s] + 2[10s] + 5[1s]

-    2[100s] + 7[10s] + 8[1s]

 

147

400

Estimate and then solve:

951 - 695 = ______

Estimate: 950 - 700 = 250

Actual: 256

500

Estimate and then solve:

7,003 - 4,885 = ________

Estimate: 7,000 - 5,000 = 2,000

Actual: 2,118 

Angles

100

A right angle  is an angle whose sides form ____ degrees

90

200

An acute angle has a measurement that is _____ than ____ degrees. 

less than, 90

300

An angle whose measurement is greater than 90 but less than 180 degrees is called a ____.

Obtuse

400

When naming an angle, the vertex is always the ____ letter. 

middle: <ABC, where  point B is the vertex

500

The sum of 4 right angles is: _____

360