Upper and lower bounds

A metal rod has a length of 2 cm to the nearest cm.

What is the greatest possible length of the rod?

Tags

CCSS.7.EE.B.3

1. The length of a fence is 137 metres, correct to the nearest metre. Choose the upper and lower bound for the length of the fence.

• 136.5 m

• 141m

• 137.5m

• 132m

Tags

CCSS.5.NBT.A.4

The number 1000 has been rounded to the nearest 100. Find its lower and upper bounds

• 950 ≤ 1001 < 1051

• 950 ≤ 1001 < 1050

• 950  ≤ 1000  < 1050

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Mr Jones wants to buy a notebook for every student in year 11. He knows there are 300 students in year 11 to the nearest 100. What is the greatest possible number of notebooks that he would have to buy?

• 350

• 250

• 300

• 400

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

The number 43.4 has been rounded to the nearest tenth. Find its lower and upper bounds.

• 42 ≤ 43 < 44

• 43.3 ≤ 43.4 < 43.4

• 43.35  ≤ 43.4  < 43.45

Tags

CCSS.5.NBT.A.4

What is the upper bound and lower bound of 390 grams, measured to the nearest 10 grams?

• 395 and 385

• 390.5 and 389.5

• 400 and 300

• 400 and 350

Tags

CCSS.7.EE.B.3

Work out the error interval when 900ml is rounded to 1 significant figure (1SF).

• $850\le x>950$

• $800\le950$

• $850\le x<950$

• $899\le x<901$

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

What is the error interval for 5.27 seconds rounded to 2 decimal places (2dp)?

• $5.26\le t\le5.27$

• $5\le t<7$

• $5.265\le t<5.275$

• $5.2\le t\ge5.28$

Tags

CCSS.6.NS.B.3

The following number has been rounded to the nearest metre.

200m

Find the upper bound...

• 200.5m

• 205m

• 250m

• 204.5m

Tags

CCSS.7.EE.B.3

To the nearest thousand, 90 000 cars drive through the road toll in one week.Write down the lower bound for this number of cars.

• 85000

• 89950

• 89500

• 89999.5

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3