Bayer Leverkusen have completed the signing of Velez Sarsfield striker Alejo Sarco, who the Bundesliga champions describe as "a promise for the future". The 18-year-old has already appeared 20 ...

For example, 320 to 1 significant figure is 300. Using place value labels can help identify what degree of accuracy to round to. Remember: Units are often referred to as ones. Eg, 34 has 3 tens ...

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