Thomas calculates 9*7 by thinking avout it as 70-7=63. Explain thomas' strategy.

What is the answer to 18+4•3?

Which of the following is generally not true about statistical sampling as compared to nonstatistical sampling? (A) Statistical samples are more representative of the population. (B) Statistical sample plans involve additional costs of evaluation.

What is 9 meters in centimeter

4.5 is 0.9% of what number

Without calculating, is the equation (1.8 times 3) times 2.1 = (1.8 times 2.1) true or false? Explain your reasoning.

At lunchtime 5/6 of students buy juice. Of those students 3/4 buy orange juice. What fraction of the students buy orange juice?

Round 224.91 to the nearest whole number do not add extra zeros

What is the value of the expression below when a is 3, b is 25, and c is 5? 1/2 (3a + 4b + c) - (c2 + 5a)

What is the order of rotational symmetry of a kite? A) 0 B) 1 C) 2 D) 4

Can you write an expression for 5x5x5x5