Powers of 10
What is 102?
Answer: 100
What happens to the decimal point when 2.5 is multiplied by 101?
Answer: The decimal point moves one place to the right, resulting in 25.
Write 4.2 in expanded form.
Answer: (4 x 100) + (2 x .1)
Round 2.347 to the nearest hundredth.
Answer: 2.35
If a pack of gum costs $2.50, how much would 4 packs cost?
Answer: $10.00
How many zeroes are in 103?
Answer: 3
Move the decimal point to multiply 3.4 by 102.
Answer: The decimal point moves two places to the right, resulting in 340.
How do you write five tenths in standard form?
Answer: 0.5
Round 5.678 to the nearest tenth.
Answer: 5.7
A shirt is on sale for $19.99. If you buy 3 shirts, what is the total?
Answer: $59.97
What is the product of 5×102?
Answer: 500
What is the result of dividing 6.7 by 101?
Answer: The decimal point moves one place to the left, resulting in 0.67.
Compare the decimals 0.75 and 0.57 using >, <, or =.
Answer: 0.75 > 0.57
What is 3.141 rounded to the nearest whole number?
Answer: 3
You have $10.00. If you spend $3.75, how much do you have left?
Answer: $6.25
Explain the pattern of zeroes when multiplying 3×104.
Answer: The product is 30,000, which has 4 zeroes after the 3.
Explain the decimal movement when dividing 5.00 by 102.
Answer: The decimal point moves two places to the left, resulting in 0.050.
What is the expanded form of 3006.32?
Answer: (3 x 103) +(6 x 100) + (3 x .1) +(2 x .01)
Round 5.496 to the nearest whole number.
Answer: 5.000
A car travels 60.5 miles on a gallon of gas. How far can it travel on 4 gallons?
Answer: 242 miles
How does 105 affect the number of zeroes in a number?
Answer: It adds 5 zeroes to the number.
How does multiplying by 103 change the placement of the decimal in 0.025?
Answer: The decimal point moves three places to the right, resulting in 25.
Compare 1.25 and 1.250 using >, <, or =.
Answer: 1.25=1.250
Round 6.1353 to the nearest thousandth.
Answer: 6.135
If a recipe calls for 0.25 cups of sugar and you want to make 4 times the recipe, how much sugar do you need?
Answer: 1 cup