Lynn Byrd, Greg Byrd and, Chris Pearce Solutions for Chapter: Decimals, Exercise 4: Exercise 4.3

Author:Lynn Byrd, Greg Byrd & Chris Pearce

Lynn Byrd Mathematics Solutions for Exercise - Lynn Byrd, Greg Byrd and, Chris Pearce Solutions for Chapter: Decimals, Exercise 4: Exercise 4.3

Attempt the practice questions on Chapter 4: Decimals, Exercise 4: Exercise 4.3 with hints and solutions to strengthen your understanding. Cambridge Lower Secondary Mathematics Learner's Book 7 Second Edition Digital Access solutions are prepared by Experienced Embibe Experts.

Questions from Lynn Byrd, Greg Byrd and, Chris Pearce Solutions for Chapter: Decimals, Exercise 4: Exercise 4.3 with Hints & Solutions

MEDIUM
Lower Secondary Stage 7
IMPORTANT

Work out this multiplication. Show how to check your answer.

3.2×52

MEDIUM
Lower Secondary Stage 7
IMPORTANT

Work out this multiplication. Show how to check your answer.

8.1×384

MEDIUM
Lower Secondary Stage 7
IMPORTANT

Work out this multiplication. Show how to check your answer.

0.78×41

MEDIUM
Lower Secondary Stage 7
IMPORTANT

This is part of Anna's homework.

Questions: work out 47.35×18.

Solution: First work out 4735×18.

Question Image

So, 47.35×18=85.23

Without checking the method and working out the answer, how can you tell that Anna is incorrect?

MEDIUM
Lower Secondary Stage 7
IMPORTANT

Work out 47.35×18. Work out the correct answer, showing all your working. 

MEDIUM
Lower Secondary Stage 7
IMPORTANT

In 1 gram of green gold there is 0.23 g of copper. How many grams of copper are there in 36 g of green gold?

MEDIUM
Lower Secondary Stage 7
IMPORTANT

Darren exchanges some British pounds £ to US dollars $
For every £1 he receives $1.29. Darren says, 'If I exchange £275, I should receive about $350. Is Darren correct? Explain your answer. 
 

MEDIUM
Lower Secondary Stage 7
IMPORTANT

 Samir manages a hotel. The table shows the cost of items that he buys for the hotel bathrooms. 

Item Cost (each)
Bottle of shampoo $0.26
Bottle of shower gel $0.23
Bottle of hand lotion $0.32
Bar of soap $0.18

Samir buys: 

  • 350 bottles of shampoo 
  • 425 bottles of shower gel 
  • 275 bottles or hand lotion 
  • 600 bars of soap. 
What is the total cost of these items?