Lower bound and upper bound

The mass, m kilograms, of a horse is 429 kg, correct to the nearest kilogram. Complete this statement about the value of m.

• 428.5 ≤ m < 429.5

• 428 ≤ m < 430

• 427,5 ≤ m < 430.5

The number 10 has been rounded to the nearest whole number. Find its lower and upper bounds

• lower bound = 9

  upper bound = 10

• lower bound = 9.5

  upper bound = 10.5

• lower bound = 9

  upper bound = 11

The mass, m kilograms, of an elephant is 3570 kg, correct to the nearest 5 kg. Complete this statement about the value of m.

• 3569.5 ≤ m < 3570.5

• 3565 ≤ m < 3575

• 3567.5 ≤ m < 3572.5

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

• lower bound = 950

  upper bound = 1050

• lower bound = 900

  upper bound = 1100

• lower bound = 950

  upper bound = 1051

The mass, m grams, of the cake is 1340 g, correct to the nearest 20 g. Complete the statement about the value of m.

• 1335 ≤ m < 1345

• 1330 ≤ m < 1350

• 1339.5 ≤ m < 1340.5

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

• lower bound = 950.5

  upper bound = 1050.5

• lower bound = 900

  upper bound = 1100

• lower bound = 950

  upper bound =1050

The number 51.2 has been rounded to the nearest 1 decimal place. Find its lower and upper bound

• lower bound = 51.1

  upper bound = 51.2

• lower bound = 51.15

  upper bound = 51.25

• lower bound = 51

  upper bound = 52

A rectangle has length 62 mm and width 47 mm, both correct to the nearest mm. The area of this rectangle is A square mm. Complete the statement about the value of A.

• 2913.5 ≤ A < 2914.5

• 2806 ≤ A < 3024

• 2859.75 ≤ A < 2968.75

The number 22.4 has been rounded to the nearest 1 decimal place. Find its lower and upper bounds

• lower bound = 22.35

  upper bound = 22.45

• lower bound = 22.3

  upper bound = 22.4

• lower bound = 23

  upper bound = 25

The mass, m grams, of the small box of biscuits is 120 g, correct to the nearest 10 g. Complete the statement about the value of m.

• 110 ≤ m < 130

• 119.5 ≤ m < 120.5

• 115 ≤ m < 125