Chen uses mental math to find the sum of 326 and 24. She uses 320, 24, and one other number. What is the missing number?

A bat and a ball cost one dollar and ten cents in total. The bat costs a dollar more than the ball. How much does the ball cost?

What is the area of a rectangle in square centimeters with a length of 12 cm and height of 5 cm

What is rounding and estimate 253,495 - 48,617=

What is 92.3*10 exponent 4

Which best describes the strength of the model? The table shows the shipping costs for items of different values. Shipping Costs for Items Total cost of items Shipping costs $25 $5.99 $45 $8.99 $50 $8.99 $70 $10.

If the sum of a number and nine is doubled , the result is eight less than the number. Find the number.

3 (5b-2) and 8b-5 are they equivalent

Solve the problem - x^2-3x+1 = 0

Jack read a 308-page book in 2 weeks. He read everyday including weekends. How quickly does Jack read?

Find the rate that would be better to solve the problem. Joss makes $60 in 5 days. How long will it take her to make $100? A. Days/Dollars B. Dollars/Days