What is the average of the first 99 counting numbers?

How do you solve this without having to add all the numbers and divide by 99?

Evaluate 3^-3 x 3^4 x 3 x 3^-5 Answers a. - 27 b. 1/27 c. - 81 d. 1/81

How are improper frations and mixed number different

Lea and kim each improve their yard by planting daylilies and shrubs. they bought their supplies from the same store. lea spent $86 on 7 daylilies and 6 shrubs. kim spent $132 on 9 daylilies and 12 shtubs.

Fernando and Roger are both in an art class. Fernando has created 40 projects in class this year. Fernando has created five times as many projects as Roger. Create a multiplication equation that represents the situation.

Choose the correct word to complete the following sentance: a natural number is (always, sometimes, never) a whole number

Shira packs 170 lemon bars in boxes for the bake sale. Each box holds 8 lemon bars. She takes home the lemon bars tha are leg over after she has filled as many boxes as possible.

What is 412, 825 round to the nearest ten?

What is the answer to 1over 20

Nine less than four times a number equals fifteen

Its 30 pages because if you divide 493 by 16 it equals 30 pages