Three ways to write the same amount

Mathematics · Mathematical Thinking · ages 9-10

Name ______________________ Date ____________

Write 75% as a decimal.
Answer: ______________
Which decimal equals 3/4?
- 0.34
- 0.43
- 0.75
- 7.5
Which decimal equals 3/4?
- 0.34
- 0.75
- 0.43
Angles on a straight line always add up to 180 degrees.
Circle one: True False
Which fraction equals 0.4?
- 1/4
- 1/2
- 4/5
- 2/5
One angle on a straight line measures 65 degrees. The angle next to it measures how many degrees?
Answer: ______________
Priya says two angles that sit together on a straight line always add to 180 degrees. Is Priya right?
Circle one: True False
Two angles sit on a straight line. One angle is 65 degrees. What is the other angle?
- 105 degrees
- 115 degrees
- 125 degrees
Priya says 0.4 equals 4%. What mistake did she make?
- 0.4 actually equals 0.04%
- She is correct, 0.4 = 4%
- She should have written 40%, not 4%
What is 25 x 12?
Answer: ______________

Answer key

For grown-ups. Fold this page away before handing over the rest.

0.75 · 75% means 75 out of 100, which is 0.75.
0.75 · 3/4 equals 0.75.
0.75 · Three out of four parts shaded is 3/4, which is 0.75 as a decimal.
True · That's the straight line angle fact: the two angles together make a straight 180 degree line.
2/5 · 0.4 is 4 tenths, which simplifies to 2/5.
115 · 180 - 65 = 115 degrees.
True · Priya is right: angles on a straight line sum to 180 degrees.
115 degrees · 180 minus 65 is 115, since the two angles must add up to 180 degrees.
She should have written 40%, not 4% · Moving the decimal point two places gives 40%, not 4%. 0.4 is the same as 40%.
300 · 25 x 12 = 300.