Round numbers to the nearest 10 1000 and

Round numbers to the nearest 10, 1000 and 1, 000. Round to two decimal places to practice money skills. E 2 Round numbers to the nearest 10. E 3 Round numbers to the nearest 100. L 1 Round whole numbers up to 7 digits to nearest 1000 and 1, 000.

Rounding Decimals • Cube calculations to begin, mixed operators – division needs practice • Left hand/right hand rounding to • Co-Ed(s) present to support with reading, writing, encouragement and maintaining focus • Coloured paper available • Variety of tasks/games for reinforcement • Peer support nearest 10 warmup • 3 stations: darts, measuring, money • • Round to nearest 10 (E 2) Round to nearest 100 (E 3) Round to nearest million (L 1) Round numbers in everyday contexts • Darts – round score to nearest 10 • Measuring – objects measured with tape measures, rulers and scales • Money – calculations with laminated money, round to nearest £ and estimate change. • Plenary true/false with hands to revise rounding to 10, decimals • • Class charter Equipment Books Any timetable changes, absences etc • Identifying mistakes in own work • Less reliance on support and encouragement • Providing peer support without realising • Contributing to class discussions and providing answers • Faster response to questions • Clear interest • Referring back to previous notes • • Everyday application of topics Peer support Find and correct errors Evaluate shortcomings or potential issues • Prove and disprove ideas and methods • Levelled tasks • Power. Point and station resources – darts, money laminates, measuring equipment • Maths. Bot, Connect 4, Countdown, Play Your Cards Right etc. • Stationery and Maths books • Decimals recap • Ratio

This week: • Rounding decimals Carly Hill Maths

Why do I need to know this? • Helps check working out by estimating answers – see if answers are sensible • Make money calculations more accurate by rounding to 2 decimal places When will I need to use this? • Round to quickly estimate totals when shopping • Working with money - price increases and sales • Estimating area when decorating

10 Minute Recap • What is 25 rounded to the nearest 10? • What is 142 rounded to the nearest 100? • What is 1039 rounded to the nearest 1000? • What is 1, 295, 488 rounded to the nearest million? • What is 936 rounded to the nearest 10?

Round to one decimal place To round to one decimal place, look at the second number after the decimal point: 3. 47 If it is: 1, 2, 3 or 4 round the first decimal place DOWN 5, 6, 7, 8 or 9 round the first decimal place UP

Round to one decimal place • What is 75. 92 rounded to one decimal place? • What is 8. 085 rounded to one decimal place? • What is 366. 5041 rounded to one decimal place? • What is 2119. 367 rounded to one decimal place?

Round to one decimal place 4. 8325 No 4. 8 5 or more? 4. 8425 No 4. 8 5 or more? 4. 852 Yes 4. 9 5 or more?

Round to two decimal places To round to two decimal places, look at the third number after the decimal point: 3. 478 If it is: 1, 2, 3 or 4 round the second decimal place DOWN 5, 6, 7, 8 or 9 round the second decimal place UP

Round to two decimal places • What is 75. 622 rounded to two decimal places? • What is 8. 186 rounded to two decimal places? • What is 366. 7261 rounded to two decimal places? • What is 2119. 927 rounded to two decimal places?

Round to two decimal places 4. 8325 No 5 or more? 4. 83 4. 846 5 or more? Yes 4. 85 Number 70. 7241 68. 6541 13. 985 5. 35492 0. 49981 To 1 DP To 2 DP 4. 85951 Yes 4. 86 To 3 DP 5 or more?

Rounding to decimal places

Put out the flags! • • Hint: turn the percentages into fractions with the denominator 100, e. g 10% = 10/100. Simplify the fractions, e. g 10/100 becomes 1/10. The biggest denominator is the number of flags. Calculate the percentage of each colour.