Mental Arithmetic Sets 29 and 30

Some tough addition and subtraction, including working with 3-digit numbers mentally.

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Place value, rounding and some pretty chilly negative numbers start the spring term off!

Doubling and halving, multiplication and division all feature in today's great challenge.

Lots of fractions questions this week.

Subtracting from thousands, taking away decimals as well as some pretty tricky addition all come into this week's questions.