Search Results For “thinking of a number”

Investigating odd and even numbers and what happens when you add them together.

A book challenge here. How accurately can you guess the number of pages in books?

This challenge is to find as many ways as possible of making 12 using three number cards and the add, subtract and multiply signs.

The cards at the end of this module are needed to complete these pages. Print onto card and cut them out.

It?s time to take a closer look at hundredths. Work includes completing number lines and ordering numbers with two decimal places.

More on decimal fractions, including some tricky estimating on number lines and calculator work which requires sharp mental skills.

Adding a single digit to a 3-digit number; there might well be plenty of counting on fingers here!

Once the technique for adding 9 to a number has been mastered, there is no problem with adding 19, 29 or 39!

Subtracting a single digit from a 3-digit number, starting with multiples of 100.

Dividing a number by ten moves it once place to the right. Divide by 100 moves it two places to the right.

Learning the number of days in each month, working out time problems using months, weeks, days, hours and minutes.

More written explanations on which operation to use and whether the question should be done mentally or on paper.