Which of the following is the best estimate of 9 + 19 × 5? Urgent.

Question

There are your answer choices.

900

1,500

110

500

Answer 1

PEMDAS is the order of operations

so multiply 19x5 first then add 9

an estimate would be 20x5 = 100+10 = 110

9 is close to 10, 19 is close to 20. It's mentally easier to multiply by 20 than 19, add 10 than 9

110 is an estimate, a little higher than the exact solution, since you rounded up.

C is the best estimate, 110

exact answer is 19x5 = 95 + 9 = 104