More Playing with Number Upper Primary
Zios and Zepts
On the planet Vuv there are two sorts of creatures. The Zios have 3 legs and the Zepts have 7 legs. The great planetary explorer Nico counted 52 legs. How many Zios and how many Zepts were there?
Abundant Numbers
48 is called an abundant number because it is less than the sum of its factors (without itself). Can you find some more abundant numbers?
Make 100
Find at least one way to put in some operation signs (+ - x ÷) to make these digits come to 100.
Four Goodness Sake
Use 4 four times with simple operations so that you get the answer 12. Can you make 15, 16 and 17 too?
Factor Lines
Arrange the four number cards on the grid, according to the rules, to make a diagonal, vertical or horizontal line.
Which Is Quicker?
Which is quicker, counting up to 30 in ones or counting up to 300 in tens? Why?
Arrays, Multiplication and Division
This article explores the use of the array to support children's thinking around multiplication and division.