Determine Reasonable Answers

A grocer sells 12 kilograms of apples. Of those, 5 3/4 kilograms are green and 3 1/4 kilograms are golden. The rest are red. Which is a more reasonable estimate for how many kilograms of red apples the grocer sold:

3 kilograms or 5 kilograms?

A puzzle book costs AED 4.25. A novel costs AED 9.70 more than the puzzle book. Which is the most reasonable estimate for the total cost of both items: AED 14, AED 16, or AED 18?

Halima needs 7 5/8 centimeters of ribbon for one project and 4 7/8 centimeters of ribbon for another project. If she has 11 centimeters of ribbon, will she have enough to complete both projects?

Ms. Houriyya wants to buy a new interactive whiteboard

for her classroom that costs AED 989. So far, Ms. Houriyya

has collected AED 485 in donations, and AED 106 in

fundraising. About how much more money does she need

to buy the interactive whiteboard?

Yousif has a piece of wood that measures 10 1/8 meters. He wants to make 5 shelves. If each shelf is 1 3/4 meters long, does he have enough to make 5 shelves?

After school, Ibrahim spent 1 3/4 hours at football practice, 2 1/4 hours on homework, and 1/4 hour getting ready for bed. Which is the most reasonable estimate for how long he spent on his activities: 3 hours,

4 hours, or 5 hours?

How confident are we with this lesson?