If all the digits of a number are added together and the sum is divisible by 3, then the original number is also divisible by 3.
200
Which of these decimals is closer to 1: 0.548 or 0.584?
0.584
200
What is 150.1 - 80.34?
69.76
200
What is 61.5% as a decimal?
0.615
200
Write all the factors of 40.
1, 2, 4, 5, 8, 10, 20, 40.
300
Put this fraction in simplest form: 36/45.
4/5
300
Write "Seventy-three ten-thousandths" in numeric form.
0.0073
300
What is 2/10 x 5/12?
1/12
300
What is 3/25 as a percent?
12%
300
What is 7 and 3/8 as an improper fraction?
59/8
400
Use Prime Factorization Trees and the Venn Diagram method to find the GCF and LCM of 21 and 45.
The GCF is 3. The LCM is 315.
400
Write 2.4 as a mixed number.
2 and 4/10 OR 2 and 2/5.
400
What is 6.548 x 3.1?
20.2988
400
What is 72% as a fraction in simplest form?
18/25
400
Put these fractions in order from smallest to largest:
2/3, 7/12, 18/24
7/12, 2/3, 19/24
500
Create a common denominator to tell which of these fractions is bigger, and why:
12/15 or 52/60.
52/60 is bigger because 12/15 = 48/60, and our comparison of fractions rule says that if denominators are the same, the fraction with the larger numerator is the bigger fraction.
500
Write these decimals in order from smallest to greatest:
0.6, 0.060, 0.006, 0.606