Problems Of The Week 19 - Mental Math Worksheet With Answer Key - Grade 8 Page 11
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27Mental
Math
*See answer key. This section should not be duplicated for the students.
22
1.
Write the ratio 12:4 in 2 other ways.
7
2.
Write as an improper fraction: 3
8
29
3.
Write
as a mixed number.
7
4.
8 cm = ____ m
5.
Write 3 lb. 1 oz. in ounces.
6.
Write 20% as a fraction.
7.
Write as a decimal: 2%
3
2
8.
4
• 4
9.
Solve for t: –13t = 52.
10. What percent of 18 is 6?
Keeping Skills Sharp
Write answers here:
3
1.
Write three fractions equivalent to
.
1. ___________
5
x
2.
Find x:
2. ___________
3. ___________
5
4
5
45°
×
×
3.
=
4
5
8
4. ___________
4.
Write 33% as a ratio.
5. ___________
1
3
+
5.
=
2
8
6. ___________
6.
17% of 5.66 =
7. ___________
7.
An angle greater than 90° is called _______.
Find the median and mode:
8.
8. ___________
1, 2, 5, 3, 9, 7, 2
1
2
9. ___________
9.
2
=
÷
2
7
10. 5 – 6 – (–9) =
10. __________
Grade 8 • Page 65
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