Currently viewing the tag: "Addition"
Imagine you have four bags containing a large number of 1s, 4s, 7s and 10s.
You can choose numbers from the bags and add them to make different totals. You don’t have to use numbers from every bag, and there will always be as many of each number as you need.
Choose some […]
This collection of 6 games gives practice in addition, subtraction, multiplication and division of whole numbers and you can easily adapt them to include negative numbers and decimals. To win these games you will need to understand place value and how the calculations work and be able to estimate the results of calculations. These […]
Can you put the numbers 1 to 8 (each number once and only once) into the circles so that the four calculations are correct?
This problem is adapted from the NRICH task A Square of Numbers with permission of the University of Cambridge. All rights reserved.
Write the number of twelfths for each fraction to match the colours. Three of the answers are filled in.
The answer to one of these calculations is and the other is . Match one of the pictures to each calculation.
Now for the big challenge. […]
Start with the set of the twenty-one numbers 0 – 20.
Can you arrange these numbers into 7 subsets, each of three numbers, so that the totals of the three numbers in each subset make seven consecutive numbers?
For example, one subset adding up to 27 might be {0, 13, 14}. […]
The Olympic emblem consists of five overlapping rings containing nine regions.
Place the numbers 1, 2, 3, … 9 in the nine regions so that the total in each ring is the same.
Can you complete the solutions given in the 4 diagrams?
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