I can extend written methods to multiplication of U.t x U

Slides:

Advertisements

Similar presentations

To be able to count on or back in steps of 0.1; 0.2; 0.3…..

Advertisements

Calcul mental. Calcul n°1 2 x 7 = Calcul n°2 3x 7 =

Warm Up #7 (Page 28) 10/9/2014 Round the following numbers to 2 significant figures (Write the question) 1) g 2) 124,000 m 3)1.25 cm Perform the.

Using the Multiple Choice Template Copy this presentation to your hard drive. Open up slide sorter, copy slides #3, 4, and 5 each time you are going to.

More partial products Recall that we can use a drawing of a rectangle to help us with calculating products. The rectangle is divided into regions and we.

Scientific Notation And Significant Figures.

$1,000,000 $500,000 $100,000 $50,000 $10,000 $5000 $1000 $500 $200 $100 Is this your Final Answer? YesNo Question 2? Correct Answer Wrong Answer.

Type your question here. Type Answer Type your question here. Type Answer.

Significant Figures Physical Science. What is a significant figure? There are 2 kinds of numbers: –Exact: counting objects, or definitions. –Approximate:

Today we will be learning: that multiplication can be done in any order the words that are used in multiplication.

Order of Operations Oral examples x 5 x x 5 ÷ ÷ 5 x ÷ 5 ÷ 2 9.

Multiplication Using Arrays. How many paper clips are here? I could count them, but there is an easier way!

NUMERACY EVENING Welcome. WHAT ARE WE GOING TO DO THIS EVENING? Pencil & paper procedures for the four operations, +,-,x & ÷ (language) Consistent, progressive.

Using the Correct Order Template Copy the presentation to your hard drive. Open the slides using slide sorter and copy slides #3, 4, and 5 for each question.

Mental Arithmetic Strategies Scotts Primary School. Mental Arithmetic Scheme.

Mathematics Evening Welcome.

Standard form and order of magnitude calculations

Standard form and order of magnitude calculations

Estimation Estimation is a Skill for Life.

36 x 2 = ? A) 36 B) 72 C) 48 D) 76.

Mental Arithmetic Strategies

Estimating Square Roots

Fractions Any fraction can be written in many ways and still have the same value… …are all the same… 0.5.

Multiply 2-digit numbers using partial products

Significant Digits or Significant Figures

Factors, Primes & Composite Numbers

Try this while you wait:

Chinese Multiplication

Making Measurements On a piece of scrap paper, write down an appropriate reading for the length of the blue rectangle shown below: (then continue…) 1.

Division with Decimals

Multiplication with Decimals

Rules of Integers.

Introduction to Logarithms

Multiplication of Decimals Using Models

On your whiteboards… Find the area 6cm 3cm.

Regents Practice Part A and B1 August 2011 Exam.

Year 2 Autumn Term Week 9 Lesson 1

Quiz Name Here Click to start.

Quiz Name Here Click to start.

Picture This! Fractions and Wholes.

Year 5 (National Numeracy Strategy) (Based on DFEE Sample Lessons)

Year 5 (National Numeracy Strategy) (Based on DFEE Sample Lessons)

Expectations in the National Curriculum Tests

MATH (CALCULATOR) PRACTICE TEST

MATH (NO CALCULATOR) PRACTICE TEST

Year 2 Summer Term Week 2 Lesson 5

Unit 4 Lesson 10 Estimate Products Use Rounding to Estimate Products.

Written methods Here are some calculations and their answers.

I can extend written methods to

Which is bigger 3 5

L.O.1 To be able to use known facts and place value to multiply and divide mentally.

Year 2 Summer Term Week 8 Lesson 1

Place Value and Writing Numbers

Objectives: To investigate the volume of a prism, cylinder

Multiplication Using Arrays.

Multiplication with Base 10 Pieces

Multiplication Using Arrays.

Year 2 Summer Term Week 11 Lesson 3

Year 2 Summer Term Week 2 Lesson 5

Year 2 Summer Term Week 11 Lesson 3

Directions to play game

Standard form and order of magnitude calculations

Year 2 Autumn Term Week 9 Lesson 1

Complete the family of four

It will make your work easier – when you multiply when you divide

Order fractions; fractions of amounts

Presentation transcript:

I can extend written methods to multiplication of U.t x U I can approximate an answer first.

Q. How would you calculate 57 x 6? Q. How would you calculate 5.7 x 6? Q. How would you approximate the answer?

Look: X 5 0.7 6 30 4.2 34.2 If you find it hard to calculate 0.7 x 6 try counting on in 0.7s and see if your answer is one tenth of 7x6.

Here is a problem: If 26 children each have a ruler measuring 30cm. and they are arranged end to end to form a line, how long would the line of rulers be?

We would need to do the calculation 30cm x 26. We can write this as 0.3m. x 26 ! These numbers allow the calculation to be done mentally i.e 3 x 26 and make it 10 times bigger for 30cm 780cm 3 x 26 and make it 10 times smaller for 0.3 7.8m.

Try doing the problem if the rulers each measure 32 cm. Can you give an answer in m and one in cm?

6.3 x 7 = 42.21 Q. Is the answer correct? Has anything gone wrong? Why?

Q. How would you work out the answer ? 6.5 x 4 Q. How would you work out the answer ? Is there an easier way? Mentally. the 0.5