Multiply by 0, 1, and 10 using the grouping of objects, counting by tens, and arrays. Explore the Multiply by 10 facts using the grouping of objects, counting by tens, and arrays. Practice with the ...

A decimal number is any number made up of the digits 0 to 9. This can include whole numbers and numbers less than 1. You can use a decimal point to show which digits are whole numbers and which are ...

Multiplication is working out how many groups of something you have altogether. Division is working how many you get, after sharing a number between another number. You can use place value charts to ...

This summer, battle lines were drawn over a simple math problem: 8 ÷ 2(2 + 2) = ? If you divide 8 by 2 first, you get 16, but if you multiply 2 by (2 + 2) first, you get 1. So, which answer is right?