Recycling Drive: Comparing Decimal Kilograms by Class

Compare recycling weights to the thousandths using >, =, and <.

Weigh-in at the recycling table

Each class brought cans, bottles, and paper to the school recycling drive. Write >, <, or = in each blank.

Room 5A collected 12.406 kg of cans. Room 5B collected 12.46 kg of cans.

12.406 kg 12.46 kg

Room 5C collected 9.3 kg of paper. Room 5D collected nine and three hundred thousandths kilograms of paper.

9.3 kg nine and three hundred thousandths kg

A bag of foil weighs 0.95 kg. A bag of bottle caps weighs 0.905 kg.

0.95 kg 0.905 kg

The scale shows one box of cardboard in expanded form. The other box weighs 15.18 kg.

(15 + 0.08 + 0.001) kg 15.18 kg

The fourth graders collected 20.1 kg of plastic. The fifth graders collected 19.999 kg of plastic.

20.1 kg 19.999 kg

A crate of glass jars weighs 6.069 kg. A crate of glass bottles weighs (6 + 7 × (1/100)) kg.

6.069 kg (6 + 7 × (1/100)) kg

Who collected more?

Compare the weights to answer each question.

Four classes weighed the glass they collected. Which class collected the most glass?

A. Room 5A: 3.48 kgB. Room 5B: 3.408 kgC. Room 5D: 3.482 kgD. Room 5C: 3.5 kg

Mr. Chen wrote these comparisons on the recycling chart. Sort each one as true or false.

A bag can go in the big bin only if it weighs more than 1.5 kg. Circle every bag weight that is greater than 1.5 kg.

The recycling goal board

Use place value to solve each problem.

10.

Room 5E's bag of cans weighs 10.4?8 kg, but a sticker covers one digit. The bag is heavier than 10.478 kg and lighter than 10.49 kg. What is the hidden digit?

Hidden digit:

11.

The goal for each class was 25.5 kg. Which classes met or beat the goal? Choose all that apply.

12.

Room 5A collected 14.30 kg of paper. Room 5B collected 14.3 kg of paper. The principal says the two classes tied. Is she right? Explain using place value.