Addition Strategy Doubles Plus One
First I teach the addition fact fluency strategy doubles doubles plus one and doubles minus one strategy. Think of fingers and toes 55 wheels on a car 22 or the eggs in a carton 66.
This is specifically highlighted in the ORIGO One video referenced earlier in this blog.
Addition strategy doubles plus one. Building a strong foundation of doubles will help students with the next strategy Doubles Plus One. Compensation is a mental math strategy for multi-digit addition that involves adjusting one of the addends to make the equation easier to solve. Near Doubles This strategy is a natural progression from the doubles.
Compensation is a useful strategy for making equations easier to solve. Near doubles could be doubles plus one facts doubles plus two facts or doubles minus one facts. A near double is a fact that is close to a doubles fact.
Doubles 22 33 and so on are key math facts to memorize. For a great video to help memorize doubles che. This unit is part of the Mental Math Strategy Collection.
This video helps understand how to use doubles to find other sums. Building Number Sense 5 minutes Take the day of school and build it with different coin sets if its 25 you could build it with two dimes one nickel five nickels four nickels five pennies twenty five pennies. Lesson 35Watch Doubles Facts.
There are fun Bingo games and simple games for practice. Find a unit for teaching the doubles facts HERE. Use these strategies to grow the doubles fact fluency and mental computation power of YOUR students.
Near doubles can include the double plus one more double plus two more or the double minus one or two. While there are many addition fact fluency strategies the three I focus on are. They can be used to quickly solve other addition math facts in two steps.
Videos and songs to help Kindergarten and Grade 1 kids learn to add and subtract within 20 demonstrating fluency for addition and subtraction within 10 by creating equivalent but easier or known sums. The following addition worksheets give addition problems with the addends separated by one. Solving the doubles fact and then adding or subtracting from that sum.
These three strategies cover a huge majority of the basic facts within 20. Making a 10 to Add 8. I try to incorporate lots of hands on.
The near doubles strategy teaches us that we can make connections and form relationships between facts. Adding doubles practice worksheets. The use-doubles strategy for addition is one of many important strategies included in The Box and Book of Facts for Addition and Subtraction from ORIGO Education.
This is best illustrated with manipulatives such as ten frames see the preview file. Apr 25 2018 - These are fun colour by number sheets for kids to practice their doubles and doubles plus one. Doubles 1 or Near Doubles is a math strategy that builds upon the students proficiency at doubling and near numbers 1.
Ways to Make 10. This strategy is to help our first graders mentally add Doubles Plus One Facts such as 34 45 56 etc. Doubles plus 1 is a strategy used to add two consecutive numbers that is when they are next to each other.
57 would be the double plus two 55 plus two more. Here for example consecutive numbers 8 and 9. 56 would be the double plus one 55 plus one more.
Worksheet 1 Worksheet 2 Worksheet 3 Worksheet 4 Worksheet. Doubles Doubles Plus One. 54 would be the double minus one 55 subtract one.
Its purpose is to train students to see ques. Check out this Doubles Plus One math strategy from our FACTastic series a comprehensive program for teaching basic math facts through strategy-based instr. There are pages to practice making 10 and the counting on strategies.
We simply add the smaller number twice or double it and then add 1 to it to get the final result. Doubles. Stress the changing in counting with each coin nickels are by fives pennies are by ones dimes are by tens.
Some students may prefer this strategy as an alternative to left-to-right addition or the breaking up the second number strategy. Turkey Doubles 1 is a fun way to give children practice with the addition double plus one strategy also known as near doubles. Eg adding 6 7 by creating the known equivalent 6 6 1 12 1 13.
Lets take a look at the doubles fact 55. Double Plus One Addition Strategy. After students know their doubles math facts they can readily solve almost doubles math facts by solving the doubles fact and then adding or subtracting from that sum.
Doubles are all around us.
