Math Expressions

Look at the diagram above. What equation is being modeled?

Tyler's coin weighs two hundred thirty-one thousandths of an ounce. Which expressions correctly represent the weight of the coin? Choose all the correct answers.

Ian and Rosa race in a speed skating competition.  Ian records a time of 42.839 seconds.  Rosa records a time of 42.782 seconds.
Which statement is true?

• Rounded to the nearest tenth of a second, the times are equal.

• Rosa's time is closer to 42.79 seconds than to 42.78 seconds.

• Ian's time is closer to 42.83 seconds than to 42.84 seconds.

• Rounded to the nearest hundredth of a second, Rosa's time is greater than Ian's.

What is 10,000 written as a power of 10 in exponent form?

Matthew has 8.2 meters of wire. He uses 3.65 meters for a craft project. He wants to use the wire he has left to complete one of the following projects. For which of the projects does he have enough wire?

Select all the decimals that are greater than 715.148 and also less than 715.35.

Mrs. Shipes bought postcards to send to you while she was on vacation. She spent $10.20 (not including tax). If each postcard was $0.85, how many postcards did she buy?

• 15

• 14

• 12

• 17

Mrs. Pardington divides 223 stickers evenly among 26 students in the class. She puts the extra stickers away. How many did she put away?

• 16

• 15

• 18

• 20

Mrs. Knoper live 3.42 kilometers from the school. Mrs. Drummond lives 0.76 kilometers from the school. The distance Mrs. Knoper lives from school is how many times the distance Mrs. Drummond lives from the school?

• 3 times

• 2 times

• 3.5 times

• 4.5 times