The operation that we use to combine or put together two or more amounts is ____. An ____ is any number that is being added. The ____ is the answer in addition. The operation that we use to take away an amount is called ____. The ____ is the answer in subtraction. A number sentence with an equal sign is an ____. ____ means to have the same value, amount or size. An ____ is a number sentence without an equal sign.

排行榜

視覺風格

選項

切換範本

恢復自動保存: ?