Volume, Distance, and Cost Calculations

This video tutorial covers adding and subtracting decimals with few non-zero digits. It includes using base 10 diagrams to compute sums and differences, addressing common misconceptions in subtraction, and completing calculations correctly. The tutorial also explores estimating costs in a store, calculating the volume of a rectangular prism, and determining travel distance at a constant speed.

What is the result of subtracting 46 hundredths from 1.13 using a base 10 diagram?

• 0.77

• 0.87

• 0.67

• 0.57

How do you convert 27 thousandths plus 4 thousandths into hundredths?

• 0.031

• 0.041

• 0.021

• 0.051

Why is it possible to subtract 1.97 from 20, despite having different digit patterns?

• Because 20 is a whole number

• Because 1.97 can be expressed as 197 hundredths

• Because 1.97 has more digits

• Because 1.97 is less than 20

Which calculation correctly shows 3 tenths minus 6 thousandths?

• 0.306

• 0.294

• 0.2940

• 0.300

If Elena wants to buy 3 pencils, a hat, and 2 binders, will her total cost be under $20?

• No, it will be exactly $20

• No, it will exceed $20

• Yes, it will be under $20

• Yes, it will be exactly $20

How many pencils can Elena buy with $5 if each pencil costs 30 cents?

• 15 pencils

• 16 pencils

• 17 pencils

• 18 pencils

How many half-centimeter cubes fit into a rectangular prism measuring 7.5 cm by 12 cm by 15.5 cm?

• 10,000 cubes

• 12,000 cubes

• 11,160 cubes

• 13,000 cubes

What is the volume of a rectangular prism with dimensions 7.5 cm, 12 cm, and 15.5 cm?

• 1,395 cm³

• 1,500 cm³

• 1,200 cm³

• 1,600 cm³

How far does a car travel in 18 minutes if it travels 75 miles in 60 minutes?

• 22.5 miles

• 18 miles

• 25 miles

• 20 miles

What is the correct way to calculate the distance traveled by a car in 18 minutes if it covers 75 miles in 60 minutes?

• Multiply 75 by 10, then divide by 3

• Divide 75 by 3, then multiply by 10

• Divide 75 by 10, then multiply by 3

• Multiply 75 by 3, then divide by 10