How can i improve my math skill? especially when it comes to lot of numbers like millions trillions n etc. i am 16 anda science stream student of a school in malaysia.

The areas of two similar triangles are 72dm2 and 50dm2. the sum of their perimeters is 226dm. what is the perimeter of each of these triangles?

Lizette is training for a marathon. at 7: 00 she left her house and ran until 8: 30, then she walked until 11: 30. she covered a total distance of 18 miles. her running speed was six miles per hour faster than her walking speed. find her running and walking speeds in miles per hour.

Lucy spent $165 in december using a new credit card. in january, she began paying between $15 and $25 each month towards her account balance.