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what does near doubles mean in math

by Rodrigo Hammes Published 3 years ago Updated 2 years ago

A near doubleis a math fact that is close to a doubles fact. For example, 6+7 is considered a near double because it is close to the doubles fact 6+6. Near doubles could be doubles plus one facts, doubles plus two facts, or doubles minus one facts.

An addition fact strategy in which you add or subtract from a doubles fact you know to solve another fact. For example, you can solve 7 + 8 by thinking 7 + 7 = 14, 14 + 1 = 15.

Full Answer

What does near doubles mean in math?

WHAT IS A NEAR DOUBLE? A near double is a math fact that is close to a doubles fact. For example, 6+7 is considered a near double because it is close to the doubles fact 6+6. Near doubles could be doubles plus one facts, doubles plus two facts, or doubles minus one facts.

What is near doubles facts?

What are strategies to remember doubles facts and neighbors?

  • EDUCATION STANDARDS:
  • TEKS. Mathematics, Grade 2.
  • Knowledge and Skills. (5) Patterns, relationships, and algebraic thinking. ...
  • Common Core State Standards
  • Operations and Algebraic Thinking, Grade 2. ...
  • Operations and Algebraic Thinking, Grade 3. ...
  • Freeze Dance. ...
  • The Truth About Me. ...
  • Number Balloons. ...

How to teach doubles facts?

Teaching Doubles – the Math and Literature Connection

  • Read the story to the students a few times
  • Use the book to show what the littlest brother ate (1 of everything) and then what the next brother ate (2 of everything). ...
  • Draw a quick graph on chart paper or on a whiteboard like the one below (Image C).
  • Show one apple and one apple. ...
  • Start with row one. ...
  • Print the number 2 on the same row (see image C).

More items...

What is doubles fact in math?

A double fact in math is a doubled value that is easy to remember, such as the equation "8 + 8 = 16." Any doubled number is a double fact, but double facts are most commonly used when they are small numbers, usually less than 12.

How do you explain near doubles?

A near double is a math fact that is close to a doubles fact. For example, 6+7 is considered a near double because it is close to the doubles fact 6+6. Near doubles could be doubles plus one facts, doubles plus two facts, or doubles minus one facts.

WHAT ARE NEAR doubles in kids?

Near Doubles are those addends that are almost a double fact. So, 4+5 is very close to 4+4. Students can easily recall that the double fact for 4+4=8 and by adding one more, they quickly know that 4+5=9. These are math fact tools that can help second graders add within 20.

What is a double and near double?

What are near doubles? Near doubles in math is a strategy used to help younger students become more familiar with counting. A double is when a number is multiplied by 2, where a near double is a number that is almost doubled, but is only a few short.

What does Doubles mean in math?

To get a double of a number, we add the same number to itself. For example, double of 2 is 2 + 2 = 4. Example: Michelle has 4 marbles and Jane has double the marbles that Michelle has.

How do you teach near doubles?

1:325:48Near Doubles: Mental Math Addition Strategy - YouTubeYouTubeStart of suggested clipEnd of suggested clipLike four plus five. We want them to recognize that they they know that five is really close to fourMoreLike four plus five. We want them to recognize that they they know that five is really close to four so this is going to be really close to the doubles fact four plus four.

How do you solve near doubles?

2:297:06Using Doubles Fact to Solve Near Doubles Facts - YouTubeYouTubeStart of suggested clipEnd of suggested clipSo if two plus two is four. So then three plus two is five. I just have to add one more to that sum.MoreSo if two plus two is four. So then three plus two is five. I just have to add one more to that sum.

How do you teach subtraction near doubles?

In the case of subtraction, kids in the 1st grade can practice using the doubles and near double strategy to make the process easier.Use Double Facts to Find the Missing Number. ... Identify the Missing Addend. ... Use Near Doubles to Subtract. ... Use Double Facts to Subtract.

How do you teach doubles to kindergarten?

0:142:38Tricks for Teaching Kids Double Facts : Early Education - YouTubeYouTubeStart of suggested clipEnd of suggested clipI'll give each kid a mirror and they have to hold up a number with their fingers. Into the mirror.MoreI'll give each kid a mirror and they have to hold up a number with their fingers. Into the mirror. Well. Right away they just doubled it with their friend and the mirror.

What is the double of 6?

12The answer is 14. 12 plus two is 14. We used doubles facts to help us add. First, we found double six, which is 12.

How do you do doubles in math?

0:0910:26Grade 1 Math 3.4, Use Doubles to Add (break-apart to make doubles)YouTubeStart of suggested clipEnd of suggested clipWe can break apart an add end to make a double with some left over if we know the sums of doubles.MoreWe can break apart an add end to make a double with some left over if we know the sums of doubles.

What is the double of 5?

10For example: Two times 5 is 10 and because of this we say that 10 is 5 doubled.

What is the double of 9?

The answer of double 9 is 18.

Mental Maths – Near Doubles Strategy

Yesterday I shared with you the mental maths strategy of counting on. Today I want to look at the near doubles strategy. Most young children learn how to double numbers…

What is the near doubles strategy?

We use this strategy when adding two consecutive numbers, in other words two numbers that follow each other. This is where students use their knowledge of doubles to work out the answer. For example, the problem might be 5 + 6 =

Using 100 grids to teach the strategy

For this activity you will need: 100-grids, enough for pairs of students as well as number cards with odd numbers between 20 – 100. You will also need a large 100 grid for the class to see.

Adding Triangles

Another way to practice using the near doubles strategy is to add numbers in a triangle.

What is a near double?

Near Doubles are those addends that are almost a double fact. So, 4+5 is very close to 4+4. Students can easily recall that the double fact for 4+4=8 and by adding one more, they quickly know that 4+5=9. These are math fact tools that can help second graders add within 20.

What is adding doubles in 2nd grade?

What is adding Doubles in Second grade math? Adding doubles is a math fact memorization technique. It is easier for kids to remember that 2+2=4, 6+6=12, 7+7=14, 9+9=18, etc. Doubles are the addends that are exactly the same. These are addition facts that second graders need to know to add within 20. Near Doubles are those addends that are almost ...

Doubles

To get a double of a number, we add the same number to itself. For example, double of 2 is 2 + 2 = 4.

Doubles in addition

The addition of any two consecutive numbers can be done by using doubles plus 1 or doubles minus 1 strategy.

Doubles in subtraction

An addend of an addition sentence will be the subtrahend/difference of the corresponding subtraction sentence.

Which way round should I add two numbers?

Fin and Snoot add up some of their favourite snacks: space grubs and astro bugs.

How can reordering numbers into number bonds help me add them?

Snoot and Fin rearrange numbers and make number bonds when adding moons.

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