3rd Grade End-of-Mod. 2

Rounding to The Nearest 10

100

42

40

200

137

140

300

1,278

1,280

Rounding to the Nearest 100

100

161

200

200

125

100

300

2,478

2,500

Adding Units

100

407 L + 194 L

601 L

200

627 g + 346 g

973 g

300

2,435 cm + 1,243 cm

3,678 cm

Subtracting Units

100

840 m - 426 m

414 m

200

536 kg - 287 kg

249 kg

300

1,000 m - 247 m

753 m

Word Problems

100

Joshua and Vicente are going trick-or-treating. Joshua collects 298 grams of candy. Vicente collects 345 grams of candy. How much candy did they collect altogether?

They collected 643 grams of candy altogether.

200

Josiah is buying snacks for a party. He compares chips to cookies. The cookies weigh 207 grams, and the chips weigh 189 grams. How much more do the cookies weigh than the chips?

The cookies weigh 18 grams more than the chips.

300

A diesel train uses about 876 liters of fuel every hour. 

a. Round to the nearest ten to estimate how many liters of fuel get used every hour.

b. Use your estimate to find about how many liters of fuel are used every 2 minutes. 

c. Calculate precisely how many liters of fuel are used every 2 minutes. 

a. about 880 liters

b. 1,760 liters

c. 1,752 liters