##### Across

**6.**what does this symbol stand for +?**8.**what angle is 90°?**11.**what is this symbol stand for ×?**12.**what is 1000?**13.**what is this 4+4=8?**15.**what is the first number with 3 digits?**16.**what is half of a sphere?**18.**what is this type of number 7th?**19.**what is 2.5 cm?**20.**what is a common word that relates to scales?**21.**what are numbers called after 0?

##### Down

**1.**what is a word that means how long something is?**2.**what is this symbol °?**3.**what is the distance from the centre of a circle to its circumference called?**4.**what is 60 minutes converted into?**5.**what is 360° or 0°?**7.**what angle is 180°?**9.**what angle is less than 90°?**10.**what shape has 5 sides?**11.**what is a ruler used for?**14.**what is the bottom number in a fraction called?**17.**what do you call a rough guess?