Tolerance www mathsrevision com S 4 Tolerance Notation

Tolerance www. mathsrevision. com S 4 Tolerance Notation 19 -Mar-18 Created by Mr. Lafferty Maths Dept.

Starter Questions www. mathsrevision. com S 4 19 -Mar-18 Created by Mr. Lafferty Maths Dept.

Tolerance www. mathsrevision. com S 4 Learning Intention 1. Success Criteria To explain what Tolerance is. 19 -Mar-18 1. Understand the term Tolerance. . 2. Calculate and simplify basic Tolerances. Created by Mr. Lafferty Maths Dept.

Tolerance www. mathsrevision. com S 4 When a builder orders steel bolts to help to a house, he would like them to be 50 millimetres long EXACTLY. This is not always possible so the builder allows a ‘little error’ either side of this. 19 -Mar-18

Tolerance www. mathsrevision. com S 4 Tolerance is written as (50± 2)mm He might be prepared to accept any bolt as long as it lies between 48 mm and 52 mm This means he will accept a bolt which is within 2 mm of the 50 mm he asked for. This is referred to as the TOLERANCE for the measurement. 19 -Mar-18

Tolerance www. mathsrevision. com S 4 Now try Ex 1 Ch 16 (page 178) 19 -Mar-18 Created by Mr. Lafferty Maths Dept.

Starter Questions www. mathsrevision. com S 4 19 -Mar-18 Created by Mr. Lafferty Maths Dept.

Tolerance Notation www. mathsrevision. com S 4 Learning Intention Success Criteria 1. To explain how write tolerances in standard notation. 19 -Mar-18 1. Write tolerances in standard notation. Created by Mr. Lafferty Maths Dept.

Tolerance Notation www. mathsrevision. com S 4 Example : An acceptable size of apples on sale at Asda must have a diameter between 8 cm and 12 cm. Write the tolerance level in standard notation. Calculate the middle value 8 + 12 = 10 2 19 -Mar-18 Tolerance is written as (10± 2)cm Created by Mr. Lafferty Maths Dept.

Tolerance Notation www. mathsrevision. com S 4 Example : For safety reasons an acceptable rivet joint for an aeroplane joint must be between 19. 9 mm and 20. 1 mm in diameter. Write the tolerance level in standard notation. Calculate the middle value 19. 9 + 20. 1 = 20 2 19 -Mar-18 Created by Mr. Lafferty Maths Dept. Tolerance is written as (20± 0. 1)mm

Tolerance Notation www. mathsrevision. com S 4 Now try Ex 2 Ch 16 (page 180) 19 -Mar-18 Created by Mr. Lafferty Maths Dept.