Home>Whiteboard Worksheets>Place value, ordering and rounding
 Choose the topic: Please select ..... A: Applying mathematics and solving problems B: Place value, ordering and rounding C: Integers, powers and roots D: Fractions, decimals, percentages, ratio and proportion E: Number operations and the relationships between them F: Mental methods and rapid recall of number facts G: Calculations: written methods H: Calculations: calculator methods I: Calculations: checking results J: Equations, formulae and identities K: Sequences, functions and graphs L: Geometrical reasoning: lines, angles and shapes M: Transformations N: Coordinates O: Construction & loci P: Measures and mensuration Q: Statistics R: Probability B: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27
 Understand and use decimal notation and place value. Multiply and divide integers and decimals by powers of 10. The place value cards can be dragged on top of each other. Decimal number lines B1: 0 to 100 (numbers to 1 decimal place) B2: 0 to 10 (numbers to 2 decimal places) B3: 0 to 1 (numbers to 3 decimal places) Show decimal numbers on a number line. Place value cards are also used to show the numbers. Drag the number indicator along the number line using the 'move' button. A number can also be shown by clicking on the number line. Click inside the blue rectangle to show or hide the number. Use these buttons to show or hide various features on the number line or place value cards.. The number line can be used for estimating numbers: hide all the features then ask pupils to click on where they think a number is on the line. The number line can be used to show rounding of numbers. For example, round to 1 decimal place, select 0.1 and then drag the number indicator along the line. Let go and the number indicator will snap to the nearest tenth. Multiply and divide numbers by 10, 100 and 1000 B4: Multiply and divide eg 0.6 x = 60 B5: Just multiply B6: Just divide B7: Multiply and divide by 0.1 and 0.01 eg 0.6 x = 0.06 B8: Just multiply B9: Just divide B10: Multiply and divide by an integer power of 10 eg 6.6 x = 0.0066 B11: Just multiply B12: Just divide Watch the digits move one/two/three places to the left or right Understand that multiplying by 1000 is equivalent to multiplying by 10 then by 100. B13: Start with a whole number: click on the x10 etc buttons, click underneath the red number to reveal/hide what it ahs been multiplied or divided by. Click further down to reveal/hide the answer. B14: Start with a decimal   B15: Game: multiply and divide numbers by 10, 100 and 1000 The aim is to multiply or divide the red number by 10, 100 or 1000 to equal the blue target number. Click on the multiply and divide buttons. Each button can be used once. The more buttons used, the more points are scored. Click on the 'next' button when the target number is equalled or it's not possible to equal it. The game lasts for 2 minutes. Standard form B16: Write numbers in standard form: positive powers B17: Write numbers in standard form: positive and negative powers

 Compare and order decimals. Identify and estimate decimal fractions on a number line B18: Number line 1: numbers to 2 decimal places (number line goes up in 0.05, numbers to the nearest 0.05) B19: Number line 2: numbers to 2 decimal places (number line goes up in 0.1, numbers to the nearest 0.01) B20: Number line 3: numbers to 2 decimal places (number line goes up in 0.05, numbers to the nearest 0.01) B21: Number line 4: numbers to 1or 2 decimal places (number line goes up in 0.2, 0.25 or 0.5) B22: Number line 5: numbers to 2 decimal places (number line goes up in 0.05 or 0.1, positive and negative numbers to the nearest 0.01)

 Round numbers. B23: Round a number to the nearest 1, 10, 100 or 1000 B24: Round distances from London to the nearest 10, 100 or 1000 B25: Round a number to the nearest whole number or to one or two decimal places B26: Round a number to the nearest whole number and to one and two decimal places B27: Round a number to the nearest whole number or to one, two and three decimal places

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