Math practice for 13 year olds - page 144 of 434
Number of problems found: 8676
- The ratio 3
The ratio of male pupils to female pupils in the Gymnasium is 7:9. If there are 512 pupils, how many pupils are male? - Items
Items A costs 675.35 while item B costs 1605.25. How much more was the cost of item B than item A? How much would you pay if you purchased items A and B? - An orchard
An orchard has 28 apple trees, 27 orange trees, and 14 cherry trees. What is the ratio of apple trees to cherry trees? - The import
The import duty is 12 percent. If the value of the goods is ; 84.00, how much is the import duty? - Perimeter of a triangle
If the perimeter of a triangle is 6 2/3 cm and the lengths of two sides are 2 1/2 cm and 3 1/3 cm, find the length of the third side. - The perimeter 6
The perimeter of the quadrilateral is 442.95 cm. The three known sides measure 84.56 cm,132.77 cm, and 82.75 cm. How long is the fourth side? - Mrs. Zarka
Mrs. Zarka has three pies for a party. She calculates that if she splits the pies evenly among the guests, they will each receive 1/6 of a pie. How many guests are there?
- The coordinates
The coordinates (5, 2) and (-6, 2) are vertices of a hexagon. Explain how to find the length of the segment formed by these endpoints. How long is the segment? - Proportion 52063
In what proportion did we divide the fabric when we cut it into 150cm and 75cm a) 15:7 b) 4:2 c) 2:1 d) 3:2 - What is 10
What is The area of a parallelogram that has vertices with the coordinates (0, 0), (4, 0),(5, 3), and (1, 3)? - Ember
Ember spent $144 on her birthday party for 18 guests. If the cost is at the same rate, how many guests will there be if she pays $176? - Jigsaw puzzle
Krista has used 4/5 of the pieces in his jigsaw puzzle. He has used 120 pieces. How many pieces are in the whole puzzle? - Boys and girls 8
In a class of 35 boys and girls with a ratio of 2:5. 5 boys are absent, and five boys are present. How many students are present? - A basket
A basket is full of 50 different kinds of fruits with a ratio of 2:3:5. If the fruits are apple, mango, and guava, how many guavas are there? - Boys and girls
If the ratio of male and female teachers is 2/5 and the proportion of male and female students is the same, how many are girls if there are 42 boys?
- Golf ball
When a golf ball is hit with two iron, it rotates at a rate of 8 1/3 times/second. How many times does this ball rotate if it is airborne for 7 1/3 seconds? - Polygon - area coordinates
Find the perimeter and the area of the polygon with the given vertices. T (2,7), U (2,9), V (5,9), W (5,7) - Beef taxation
In December, beef cost € 5.71 per 1 kg. How much should the price of 2.5 kg of beef change if VAT changed from 20% to 10%? How much will 2.5kg cost in January? - Sides of a rectangle
The dimensions of a rectangle are in a 4:12 ratio. If the shorter side length is 12 cm, what is the length of the longer side in centimeters? - My brother
My brother is missing 240 assignments. He wants to finish them all. If he does two each day, how many days will it take for him to finish 1/3 of his assignments?
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