Negative Numbers on a Number Line
It is 3°C in the morning and the temperature falls by 7 degrees. Percy the penguin counts down through zero on a number line to reach −4°C. Learn that falling means moving left and rising means moving right, then work out a temperature rise from −5°C yourself.
Watch next
1:49Place Value to Millions
Leo the lion counts 3,452,618 visitors to the savanna. Learn what each digit is worth using a place value chart, how to read millions out loud, and how commas help. Then find the value of the 7 in 2,071,345.
2:01Rounding to the Nearest 10, 100 and 1,000
Hopper the frog rounds 3,472 to the nearest hundred on a number line. Learn the "5 or more, round up" rule, what happens with halfway numbers, and then round 6,238 to the nearest thousand yourself.
2:07Factors, Multiples and Prime Numbers
Ellie the elephant arranges 12 peanuts into rectangles to find its factors, Hopper hops in threes to show multiples, and we find out why 7 is a prime number. Then decide whether 15 is prime.