Math practice for 13 year olds - page 111 of 434
Number of problems found: 8665
- Fraction and ratios
Fraction and ratios are different names for the same thing. - Calculate 69104
The diagonal of the TV screen is 82 cm, and the height is 40 cm. Calculate the width of the screen. - Sarrah
Sarrah bought cupcakes for her family. Thirty-six cupcakes are chocolate, and the rest are red velvet. If 80% of all the cupcakes she bought are chocolate, how many red velvet cupcakes did she buy? - Tangerines 68994
When the lion took two mandarins from the bowl and Milada took one-fifth of the rest, four mandarins remained in the bowl. How many tangerines were initially on the dish? - The tempture
The temperature increased 13°F between 6 AM and 3 PM. The temperature at 3 PM was 70°F. What was the temperature at 6 AM? - Reverse percentages
A washing machine that is on sale has a price tag of R 1 240, representing a discount of 22.5% off the original price. What was the original price? - An amusement 2
An amusement park sells child and adult tickets at a ratio of 8:1. On Sunday, they sold 147 more child tickets than adult tickets. How many tickets did the amusement party sell on Sunday?
- Neziswa
Neziswa is conducting an experiment in which the temperature is measured carefully. The temperature was 76°C at the end of the first minute, and then it fell by 5°C every minute. Determine a formula to calculate the temperature (T) after m minutes. - Baking a cake
Christy is baking a cake that has a 9-inch diameter. She wants to cover the top of the cake with buttercream icing. How much icing will she need? - The average 5
The average of the two numbers is 9.5. One of the numbers is 11. What is the value of the other number? - Simultaneously 68864
From cities A and B, which are 50 km apart, two cars set off in the same direction simultaneously with average speeds of 80 km/h and 120 km/h. How long will the faster car reach, the slower one, and at what distance from city A? - Hectares 68854
Tractor drivers plow "h" hectares of land per day. How many hectares of land would they have to plow per day to plow the 585 ha area three days earlier than planned? For which "h" does this problem have a positive solution? - Determine 68804
The basket contains five red apples with an average weight of 125 grams and one yellow apple. The average weight of all apples in a basket is 120 grams. Determine the weight of the yellow apple in grams. - Intersections 68784
The figure shows the circles k₁(S₁; r1=9 cm) and k₂(S2; r2 = 5 cm). Their intersections determine a common chord t 8 cm long. Calculate the center distance |S₁ S₂| in cm to two decimal places. - Temperature 68724 The thermometer showed -2 °C in the morning. By lunch, the temperature had risen by 5 °C. The temperature had dropped by 13 °C till midnight. What temperature in °C did the thermometer show at midnight?
- Mark Argie
Mark Argie has P11.50 more than Erwin. Together, the two boys have P131.50. How much does Mark Argie have? - Fertilizer 68694
0.6 l of fertilizer goes to 40 l of water. How much fertilizer should be put in per 10 liters of water? - Which 9 Which of the temperatures is the coldest? A.100 degrees Celsius, B.373 degree Kelvin, C. 32 degrees Fahrenheit.
- Grandma 9
Grandma bought 2 kilograms of apples at a crowns per kilogram, 5 kg of potatoes at b crowns per kilogram, and one celery for 12 crowns. She paid with three fifty crowns. o Depending on the quantities a, b, express the amount in crowns that was returned to - Corresponding 68604
The prism with a square base has a volume of 200 liters, and the length of its base edge is a decimeter. Using the corresponding expression of the prism, write the height of the prism in decimetres.
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