Mathematics, 04.03.2021 22:40, kell22wolf

1. Use the mental math strategy of rounding (for example +1/-1, +2/- 2, +10/-10, or +20/-20) to add the following numbers. Write down how you would change the numbers in your head for each question. Ex. 27 + 51 28+50=78
a. 41 + 16=
b. 79 + 14=
c 580 + 355=
d. 174 + 620=
e. 378 + 210=

Answers: 1

Show answers

Other questions on the subject: Mathematics

Mathematics, 21.06.2019 19:00, crazylife77

Acomputer store bought a program at a cost of $10 and sold it for $13. find the percent markup

Answers: 1

continue

Mathematics, 21.06.2019 19:00, ktenz

Asmall business produces and sells balls. the fixed costs are $20 and each ball costs $4.32 to produce. each ball sells for $8.32. write the equations for the total cost, c, and the revenue, r, then use the graphing method to determine how many balls must be sold to break even.

Answers: 3

continue

Mathematics, 21.06.2019 19:30, Lindsay882

How long must $542 be invested at a rate of 7% to earn $303.52 in interest? in a easier way

Answers: 1

continue

Mathematics, 21.06.2019 21:30, gigglegirl5802

Select all the statements that apply to this figure

Answers: 2

continue

Do you know the correct answer?

1. Use the mental math strategy of rounding (for example +1/-1, +2/- 2, +10/-10, or +20/-20) to add...