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How can the distributive property be used to find 7 times 391?
7 * 391=7+300+90+1 C. 7 * 391=7 * 300+90+1 D. 7 * 391=7 * 300+7 * 90+7 * 1 E. 7 * 391=2,100+630+7.
What is distributive property in math 3rd grade?
The distributive property says that when you multiply a factor by two addends, you can first multiply the factor with each addend, and then add the sum.
What is break apart strategy in math?
Breaking apart an addend is a mental math strategy for addition. This strategy involves breaking up one addend in an equation into more manageable parts. Like many other mental math strategies, this strategy encourages students to think flexibly and to manipulate numbers in different ways.
What’s the best way to model distritive property?
Breaking apart arrays is another effective strategy for students who are learning multiplication, and helps model distributive property. For example: students usually learn their twos and their fives sooner than the larger times tables, so that when faced with a problem like 6 X 7, students can instead look at the 7 as a (5+2) instead.
How is the distributive property used in multiplying?
The distributive property distributes (multiplies) one number across multiple numbers that are being added or subtracted. This is why he only split up one of the 2 numbers. He could have split the first number and kept the 2nd as is like: (1+3)7 or 7(1+3). In that case, the distributive property lets you do 7*1 + 7*3.
How is the distributive property used in Sal?
An error occurred while retrieving sharing information. Please try again later. Are you a student or a teacher? Closes this module. Sal uses the distributive property to break up 4×7 into smaller numbers.
Why is it important for students to break apart arrays?
It’s also important that students know they can break apart a multiplication problem (an array) in order to make the problem simpler to solve. You can start by asking students a simple question and entertain answers and discuss openly as a whole class or in small groups.