problem
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Number round up
Arrange the numbers 1 to 6 in each set of circles below. The sum of each side of the triangle should equal the number in its centre.
Use the interactivities to fill in these Carroll diagrams. How do you know where to place the numbers?
Pat counts her sweets in different groups and both times she has some left over. How many sweets could she have had?
Can you put the numbers 1-5 in the V shape so that both 'arms' have the same total?
Are these statements relating to odd and even numbers always true, sometimes true or never true?
Are these statements always true, sometimes true or never true?