Math practice for 13 year olds - page 21 of 434
Number of problems found: 8665
- The bedroom
The area of the rectangular bedroom is 136 5/8 square feet. If its width is 12 3/4 feet, find its length in simplest form. - A ribbon 3
A ribbon, which is 6 2/3m long, is cut into two pieces. The length of one piece is 1 2/3 m. Find the length of the other piece. - X-triangle
Find the length of the x segment in the given triangle drawings. - Working together
Zeru can complete a certain job in 5 days, and Tulu can complete the same job in 3 days. How long will they complete the job if they work together? - Powers of three
Simplify to a single power of 3: 35/3 Words: start fraction, 3, to the power 5, divided by, 3, end fraction. - Muffins 3
Adela went out and bought some muffins. She gave 27 to Jack and 2/7 of the rest to her brother. She is then left with 1/2 of the number of muffins she had before. How many muffins did Adela have at first? - Temperature minus
On a very cold day in January, the temperature started at -12 degrees. The temperature rose 20 degrees during the day. That evening, the temperature fell 10 degrees. What is the temperature at the end of the day?
- GCD&LCM of three
GCD of three numbers is 30 and LCM is 900. As two the are 60 and 150, find the number. - Carla 4
Carla is hanging a quilt that is 0.8 meters wide on a wall that is 3.3 meters wide. Carla wants the quilt to be centered on the wall. Which of the following is the most reasonable estimate for the space on either side of the quilt when it is perfectly cen - The sum 43
The sum of Rs. 820 will be divided among Ali, Fakhar, and Zahid according to the ratio 3 : 4 : 5. How much does each receive? - Population - growth China's population in 2001 was 1276300000, and in 2005 it was 1307600000. Find the increase in population.
- Trigonometric fx
When an acute angle φ is in the standard position, its terminal side passes through point P (1,3). Find trigonometric functions of angle θ : sin φ, cos φ, tan φ, cotan φ. - Using fraction
Ling is using fraction strips to add 2/3 and 7/12. The sum is one whole, plus how many twelfths? - Mr. Ancheta
Mr. Ancheta bought 8/9 of a cake. He slice it into 1/4 pieces. How many 1/4 pieces were there? - The graph
Given that (-5,8) is on the graph of f(x), find the corresponding point for the function f(x)-2.
- Bag of popcorn
The average cost of a bag of popcorn at the movie theater was $3.50 in 1995 and $4.75 in 2015. Find the percent of change in the price of a bag of popcorn from 1995 to 2015 and classify it as a percent increase or percent decrease. - In 2010 In 2010, the population of the city was 223,000. From 2010 to 2015, the population grew by 6%. From 2015 to 2020, it fell by 4%. To the nearest 100 people, what was the population in 2020?
- Mrs. Susan 2
Mrs. Susan received a shipment of 60 novelty baseball caps. Of the caps, 1/3 had bug antennae, 2/5 had moose antlers, and the rest had plastic propellers. How many of the caps had plastic propellers? - Cesar
Cesar increased the amount of water he drinks each day from 64 ounces to 72 ounces. By what percentage did Cesar increase the amount of water he drinks each day? - Gift card Lauren was given a gift card for a coffee shop. Each morning, Lauren uses the card to buy one cup of coffee. The original amount of money on the gift card was $10, and each cup of coffee costs $2. Make a table of values and then write an equation for A, i
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