66 results in prealgebra Numeracy and Arithmetic  search across all projects.

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Natural numbers addition algorithm. 2 and 3 digit numbers. Carrying.

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Subtracting a decimal with 3 decimal places from a decimal with 2 or 3 decimal places. borrowing is necessary. This was modified from a subtraction question using integers with each number divided by 1000 so the variables have names referring to ones, tens, hundreds etc.

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Decimals addition algorithm. 2 and 3 digit numbers. Carrying.

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Useful for a review of the base 10 number system before introducing different bases and also just ensuring students understand how the base 10 system works.

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This question is to test if you know how to use your calculator correctly.

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This question is to test if you know how to use your calculator correctly.

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Integers in bases from 2 to 9 and converting them to base 10.

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Useful for a review of the base 10 number system before introducing different bases and also just ensuring students understand how the base 10 system works.

Fractions/division and multiplication, different ways of presenting the same thing (nonalgebraic) Ready to useQuestion
Students seem to not realise that $\frac{a}{b}\times c=c\times\frac{a}{b}=\frac{a\times c}{b}=\frac{c\times a}{b}=a\times c \div b=a\div b\times c=c\div b \times a \ne c \div (b\times a)\ldots $ etc. This question is my attempt to help rectify this.

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Students seem to miss the fact that division is actually multiplication by the reciprocal or the inverse of multiplication. This question attempts to address that.

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Counting the number of significant figures and rounding integers and decimals.

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Recall of common units, along with understanding multiplication.

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Unit rates and converting rates.

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Basics, percentage of an amount, converting to fractions and decimals.

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