Rounding – to the nearest 10

Slides:

Advertisements

Similar presentations

Rounding and Approximation. Methods of Rounding Decimal Places Identify the digit of the decimal place required  Look at the next digit to the right.

Advertisements

P449. p450 Figure 15-1 p451 Figure 15-2 p453 Figure 15-2a p453.

Round each number to the level of accuracy given.

Approximations – Decimal Places & Significant Figures

Key words: Square Triangle trapezium My Learning Outcome…

Rounding Intro to Nearest Whole Number Nearest Whole Number

Nearest Whole Number Decimal places are the figures after the decimal point decimal places decimal places 3 decimal places

Starter Activity Think pair share I have £240

Do Now: 47° 6.2m x θ 16cm 13cm 5.8m 54.3°. Rounding Decimals How many decimal places do each of these numbers have?

R ounding Nearest 10 Nearest decimal place The nearest whole number Correct to 2 dps Nearest 1000.

Who Wants To Be A Millionaire?

Accuracy Learning Outcomes  Round off to a given number of decimal places  Round off to a given number of significant figures  Calculate the upper and.

1 Significant Figures Significant figures tell us the range of values to expect for repeated measurements The more significant figures there are in a measurement,

Rounding is done in two main ways. 1. Decimal Places 2. Significant Figures.

MATHEMATIC IN CONSTRUCTION AND THE BUILT ENVIRONMENT Janine Parry Week 2/3 07/09/15 – 11/09/15.

Significant Figures and Rounding. Counting Sig. Figs. Pacific a.k.a.: Present Start with first non-zero, go in  direction Atlantic a.k.a.: Absent Start.

Uncertainty in Measurement. Significant Figures #1 All non-zero digits are significant. Examples

SIGNIFICANT FIGURES AND DECIMAL PLACES

Rounding (Decimal Places) Round each number to the given number of decimal places.

Three Significant Figures Three significant figures. If you approximate a number, what are the most significant 3 numbers that you can give. E.g

Rounding- Decimal Places and Significant Figures.

Rounding to significant figures

Lesson 33Equivalent FractionsPage 235 Comparing Decimals Rounding Decimals.

Plan for Place Value….. EstimatingRounding Place Value Decimal Sequences Significant Figures Ordering Numbers Level 3 Grade G Level 3 Grade G Level 3/4.

Rounding Decimals using Place Value.. Essential Question: How can I use place value understanding to round decimals to any place?

Adding and Subtracting with proper precision m m 12.0 m m m m m m m Keep in your answer everything.

PLACE VALUE, ORDERING AND ROUNDING. MULTIPLYING AND DIVIDING BY 10, 100 AND 1000 Complete the following: 3.4 × 10 = ÷ = × 45.8 = 45.

Three Significant Figures Three significant figures. If you approximate a number, what are the most significant 3 numbers that you can give. E.g

Chapter 3 Approximation & Estimation. Learning Outcomes Round to nearest 10, 100, 1000 Round in practical problems Round to a specified number of decimal.

Mathematics Lesson 1 Significant Figures Lesson Objectives: To learn how to round to significant figures and how to estimate Starter Complete then negative.

Rules for Significant Figures

Significant Figures.

Rounding Decimals.

Fractions and decimals review

Literacy Research Memory Skill Practice Stretch!

Why did we say, do we use rounding?

Decimal places and significant figures

Significant Figures Significant figures are those numbers considered to be important in value All non-zero digits are significant Zeros are NOT always.

Significant Figures (& d.p.) Rough Estimates

4 3 9 H T U What is the most significant figure in

Week 13 Understand and use rounding, estimation and check calculations

Week 13 Rounding & Estimation

Rounding Learning Objectives: Able to round to the nearest 10, 100

Literacy Research Memory Skill Practice Stretch!

Rounding Bingo.

Significant Figures All non-zero digits are significant (2.45 has 3 SF) Zeros between (sandwiched)non-zero digits are significant (303 has 3 SF)

What does the first significant figure represent in each case

Rounding and estimating: How many significant figures?

We normally abbreviate this to ‘nearest 10’

Objective - To round decimals to a specified place value.

Error Intervals: Rounded to significant figures

Rounding Learning Objectives: Able to round to the nearest 10, 100

Significant Figures.

Rounding: 1, 2, 3 decimal places

Literacy Research Memory Skill Practice Stretch!

Practice Rounding to the nearest… © T Madas.

Practice Rounding to Significant Figures © T Madas.

What is 13 ÷ 4.

Rounding Significant Figures (1 mark)

Significant Figures.

Convert to scientific notation

Rounding: 1 Decimal Place – version 2

1. Integers and Decimals.

Rounding – to the nearest 10

Decimals Round off the following to the nearest :

Decimals LI: To identify the information that a decimal number shows and to be able to round a decimal. LI: To be able to round to the nearest 100, 10.

Rounding – Decimal Places & Significant Figures – Connect 3

Rounding To The Nearest Whole Number.

Here are a mixture of integers and decimal values.

Presentation transcript:

Rounding – to the nearest 10 4 8 3 2 4 8 3 7 1 9 5 5 or more? 5 or more? 5 or more? No Yes Yes 4 8 3 0 4 8 4 0 2 0 0

Rounding – to the nearest 100 1 5 8 2 3 1 5 8 7 2 8 9 5 or more? 5 or more? 5 or more? No Yes Yes 1 5 8 2 0 0 5 9 0 0 1 0 0 Copy & complete this table: Number To nearest 10 To nearest 100 To nearest 1000 37 521 274 503 7 630 918 9 875 452 37520 37500 38000 274500 274500 275000 Your Turn 7630920 7630900 7631000 9880 9900 10000 450 500

Rounding to 1 Decimal Place (1DP) 4 . 8 3 2 5 4 . 8 4 2 5 4 . 8 5 2 5 or more? 5 or more? 5 or more? No No Yes 4 . 8 4 . 8 4 . 9 4 . 8 7 5 . 2 6 7 1 4 1 . 9 6 7 5 or more? 5 or more? 5 or more? Yes Yes Yes 4 . 9 5 . 3 2 . 0

Rounding to Decimal Places: 2DP 4 . 8 3 2 5 4 . 8 4 6 4 . 8 5 9 5 1 5 or more? 5 or more? 5 or more? No Yes Yes 4 . 8 3 4 . 8 5 4 . 8 6 1 . 6 9 4 9 5 . 2 6 7 1 1 . 8 9 7 5 or more? 5 or more? 5 or more? No Yes Yes 1 . 6 9 5 . 2 7 1 . 9 0

Rounding to Decimal Places: 3DP 4 . 8 3 2 5 4 . 8 4 6 2 4 . 8 5 9 5 5 or more? 5 or more? 5 or more? Yes No Yes 4 . 8 3 3 4 . 8 4 6 4 . 8 6 0 1 . 6 9 4 2 5 . 2 6 2 7 1 . 9 9 9 9 5 or more? 5 or more? 5 or more? No Yes Yes 1 . 6 9 4 5 . 2 6 3 2 . 0 0 0

Rounding to Decimal Places 1DP 2DP 3DP 4 . 8 5 2 1 . 6 9 4 9 5 . 2 6 2 7 5 or more? 5 or more? 5 or more? Yes No Yes 4 . 9 1 . 6 9 5 . 2 6 3 Copy & complete this table: Number To 1DP To 2DP To 3DP 63.4721 87.6564 149.9875 3.54029 0.59999 63.5 63.47 63.472 87.7 87.66 87.656 Your Turn 150.0 149.99 149.988 3.5 3.54 3.540 0.6 0.60 0.600

Rounding to 1 Significant Figure (1SF) 0 . 0 7 6 5 0 . 0 0 1 2 1 . 0 0 9 5 5 or more? 5 or more? 5 or more? Yes No No 0 . 0 8 0 . 0 0 1 1 2 4 1 5 8 7 7 5 5 or more? 5 or more? 5 or more? No Yes Yes 2 0 0 6 0 0 8 0

Rounding to 2 Significant Figure (2SF) 1 4 7 2 1 . 4 2 7 9 0 . 0 5 3 5 5 or more? 5 or more? 5 or more? Yes No Yes 1 5 0 0 1 . 4 0 . 0 5 4 4 2 7 2 8 2 0 4 4 7 8 0 . 0 6 9 6 5 or more? 5 or more? 5 or more? Yes No Yes 4 3 0 0 0 2 0 0 0 0 0 0 . 0 7 0

Rounding to 3 Significant Figure (3SF) 0 . 0 2 6 7 1 3 . 2 9 4 9 3 4 7 2 8 5 or more? 5 or more? 5 or more? No No No 0 . 0 2 6 7 3 . 2 9 3 4 7 0 0 1 3 7 9 8 9 7 4 9 7 8 1 2 . 0 6 9 5 or more? 5 or more? 5 or more? Yes Yes Yes 1 3 8 0 0 9 7 5 0 0 0 1 2 . 1

Rounding to Significant Figures 1SF 2SF 3SF 0 . 0 7 6 5 4 2 7 2 8 1 2 . 0 6 9 5 or more? 5 or more? 5 or more? Yes Yes Yes 0 . 0 8 4 3 0 0 0 1 2 . 1 Copy & complete this table: Number To 3SF To 2SF To 1SF 6.3528 34.026 0.005708 150.932 0.00007835 6.35 6.4 6 34.0 34 30 Your Turn 0.00571 0.0057 0.006 151 150 200 0.0000784 0.000078 0.00008

Leave out Questions 3, 8, 10, 11, 12, 13 until next lesson