Write the greatest and least possible number that rounds to: 140,7,810,36,000 90 and 520,000 i need nw guys me

a. 670

least: 665

greatest: 674

b.140

least: 135

greatest: 144

c.7810

least: 7805

greatest: 7814

d.36,000

least: 35500

greatest: 36499

e.90

least: 85

greatest:94

f.520,000

least: 515000

greatest: 52499

answer:

g-140-l

step-by-step explanation:

Greatest 144

Least 135

Step-by-step explanation:

The numbers to be rounded of to 90 (tens):

When the digit to the right of the place value to be rounded off is 5 and up, add 1 to the digit place value to be rounded off.

85 ⇒ 8 is in tens place and to its right is 5, then add 1 to 8 ⇒ 90.

Greatest possible number: 94

If the digit to the right of the digit place value to be rounded off is 4 and below, round down the number.

9 is the digit place value to be rounded off and to its right  digit is 4, so round down or remain to 90.