rounding and estimation grade 3

I climbed 125 feet on Tuesday and 376 feet on Wednesday. Which number sentence shows the best way to estimate the amount of feet I climbed on both days? 

• 100+300=400
• 100+400=500
• 200+300=500
• 200+400=500 

Tags

CCSS.3.NBT.A.1

CCSS.3.NBT.A.2

CCSS.3.OA.D.8

I studied for 49 minutes on Tuesday and 57 minutes on Wednesday. Which number sentence shows the best way to estimate how many minutes I studied for both days? 

• 40+50=90
• 40+60=100
• 50+60=110
• 50+50=100

Tags

CCSS.3.NBT.A.1

CCSS.3.MD.A.1

I am saving money for a trip to Disney. The theme park cost $385, food will cost $293 and gifts will cost $93. Which number sentence is the best estimate of the amount of money I will spend? 

• 390+290+90=
• 380+290+90=
• 390+300+100=
• 380+300+90=

Tags

CCSS.3.NBT.A.1

CCSS.3.NBT.A.2

CCSS.3.OA.D.8

There are 367 students in third grade and 158 in fourth grade. About how many more students are in third grade than fourth? 

• 600
• 300
• 520
• 200

Tags

CCSS.3.NBT.A.2

CCSS.3.OA.D.8

I traveled 452 miles one week, 317 the other, and 289 the third week. Which is the best estimate of the number of miles I traveled? 

• 1,100
• 1,300
• 900
• 800

Tags

CCSS.4.NBT.B.5

I played basketball. the first game I scored 186, 129, and 155. Which number sentence shows one way to estimate the score? 

• 100+100+100
• 100+100+200
• 200+100+200
• 200+200+200

Tags

CCSS.3.NBT.A.1

CCSS.3.OA.D.8

I sold 782 pencils, 235 erasers. What is the best estimate of the number of supplies we sold? 

• 1,000
• 900
• 800
• 1,100

Tags

CCSS.3.NBT.A.1

CCSS.3.NBT.A.2

I had 351 blue crayons, 329 green crayons, and 317 red crayons. Which shows the best way to estimate how many more blue than red crayons? 

• 300-200 
• 400-300
• 300-300
• 400-400

Tags

CCSS.3.NBT.A.1

CCSS.3.NBT.A.2

CCSS.3.OA.D.8

I bought a camera for $637 and a printer for $125. Which is the best estimate of how much more the camera cost than the printer? 

• 500
• 600
• 700
• 400

Tags

CCSS.3.NBT.A.1

CCSS.3.NBT.A.2

CCSS.3.OA.D.8

One pig weighed 326 and the other pig weighed 448. Which number sentence shows the best way to estimate the weight of the 2 pigs? 

• 500-300
• 500+400
• 400+300
• 400-300

Tags

CCSS.3.NBT.A.1

CCSS.3.NBT.A.2