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What numbers make a fact family?
A fact family is a group of math facts using the same numbers. In the case of addition/subtraction, you use three numbers and get four facts. For example, you can form a fact family using the three numbers 10, 2, and 12: 10 + 2 = 12, 2 + 10 = 12, 12 − 10 = 2, and 12 − 2 = 10.
What is a fact family in 2nd grade math?
A fact family is two addition sentences and two subtraction sentences that all use the same three numbers.
What is a fact family in math 1st grade?
In this 1st grade math lesson, we write FACT FAMILIES using small numbers. A “fact family” consists of two additions and two subtractions that use the same three numbers. For example, 2 + 6 = 8, 6 + 2 = 8, 8 − 2 = 6, and 8 − 6 = 2 makes up a fact family (two addition facts plus two subtraction facts).
What is a fact family for 2 4 8?
What fact family describes this array? Examples: 2 rows and 4 columns (2 × 4 = 8, 4 × 2 = 8, 8 ÷ 4 = 2, 8 ÷ 2 = 4) 2 rows and 2 columns (2 × 2 = 4, 4 ÷ 2 = 2)
What is the fact family for 5/6 and 30?
A fact family is a group of facts made from the same three numbers. For 6, 5, and 30, the multiplication and division fact family is 5 × 6 = 30, 6 × 5 = 30, 30 ÷ 6 = 5, 30 ÷ 5 = 6.
What is the fact family for 5 7 and 35?
5 * 7 = 35 7 * 5 = 35 35 ÷ 5 = 7 35 ÷ 7 = 5 Fact families are a set of related addition and subtraction facts, or related multiplication and division facts.
What fact family uses 3/4 and 12?
They are a fact family. Each above number has a math “relationship” with one another. 12 divided by 3 equals 4. 12 divided by 4 equals 3.
What is a number fact?
Number facts are simple calculations with two numbers. They could be addition, subtraction, multiplication or division. Sometimes these can be called fact families. Number bonds (like 3 + 7 = 10, or 9 – 4 = 5) or facts learned from times tables (like 4 x 6 = 24 or 27 ÷ 3 = 9) are number facts.