Examples of equations for practice for 9 year olds
Number of problems found: 49
- Miss Patel
Miss Patel thinks her class of 20 students will average 95 on a math test. Before she grades the last student's test, the class average is 97. What is the lowest possible score on the 20th test for the class to average 95? - The masses
The masses of a mother and a daughter differ by 30kg and are in the ratio of 8:5. Find the mass of each. - Lilies 81910
There are twice as many pink water lilies in the pond as yellow water lilies, but twice as few as white water lilies. Which water lilies are the most and which are the fewest? How many times more white water lilies are there than yellow water lilies? How - Originally 81483
There are several cubes in the box. Kamil doubled this number. Karol then took 7 cubes from the box, and 9 remained. How many cubes were originally in the box?
- Positive integer integral
How many different sets of a positive integer in the form (x, y, z) satisfy the equation xyz=1400? - Mountain climbing
Ken and his brother decided to go on mountain climbing 8 miles from their house to Mt. Daraitan at a rate of x mph (miles per hour). For the return trip, it was 2 mph faster. It took them 6 hours for the entire round trip. What is the x? - Diala
Diala bought some books in 2012, and then during 2013, she bought 3 times as many books as she bought in 2012. Diala bought 48 books during these two years. Make a diagram to represent the given. How many books did Diala buy each year? - A two
A two-year-old car was sold for USD 30000, 50% less than the price when new. Calculate the cost of the vehicle when new. - Equation: 72584
Find the solution of the equation: 2x: 8 = 3 ÷ 4, where x is an integer.
- The temperature 32
The temperature in a place in Antarctica at noon is 5°Celsius, and every hour, it drops 4 °Celsius. Express this relationship using one equation and represent it graphically. - Shopping trips
Luke bought some fresh produce. He picked up two oranges and three bananas. The cost of Luke's shopping was $18. Georgia also went to the same shop and bought five oranges and seven bananas. The cost of Georgia's shopping was $44. Write and solve a system - Tickets 10
There are two types of zoo tickets: A for adults and C for children and senior citizens. The cost of 7 type A and 4 type C tickets is 46 €, whereas the cost of 8 type A and 6 type C tickets is 57 €. Calculate the cost of 5 type A and 3 type C tickets. - Fu Da
Fu Da spent a whole day traveling. 5/8 of the journey was spent by airplane, and 1/4 of the remainder was by train. He spent 6 3/4 h on the bus journey. a) How long did Fu Da spend on the train journey? b) How much longer did Fu Da spend on the airplane t - Marbles 3
Paisley has a bag of 16 green, orange, and yellow marbles. If there are eight green marbles, how many marbles have to be yellow for P(yellow) = 1/4?
- Beginning 66104
The kangaroo always jumps three steps up. Each time he jumps, the bunny jumps down two steps. On which stairs will they meet? The kangaroo stands on the 1st step at the beginning and the bunny on the 100th. - A beauty
A beauty supply company has 53 liters of 5% hydrogen peroxide solution on hand. The company also has a nearly limitless amount of a solution that contains 35% hydrogen peroxide. How many liters of the 35% hydrogen peroxide solution should the company add - 4 digit number
I am a four-digit number. My thousand period has a first digit which is thrice the second digit, and the second digit is two more than the third digit. All the rest of the digits are zeros. What number am I? - Ten pupils
Ten pupils came to the art group. Eight pupils painted with watercolors and nine painted with ink, each painted with ink or watercolors. How many pupils painted water and ink at the same time? - Equation: 7845
Solve the equation: 3968-x = 3179
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