= 200
Number bonding to 200
for 4th grade
Identify pairs of multiples of 10 that bond to 200
Addition - Number bonding - Number bond to 200, multiples of 10
Number bonding is a method for recognizing common combinations of numbers that add to a specific target number. In this topic we are looking at pairs of numbers that bond to 200, and specifically, multiples of 10 that bond to 200. So, the obvious pair you might think of is:
100 + 100 = 200
Obviously there are many other combinations that also bond to 200:
50 + 150 = 200
80 + 120 = 200
40 + 160 = 200
One thing you will notice is that we could knock off the final zero and think about number pairs that bond to 20. You will also notice that we can play around with these bonds to derive related facts - for instance:
30 + 170 = 200
170 + 30 = 200
30 = 200 - 170
170 = 200 - 30
200 - 170 = 30
200 - 30 = 170
So knowing your number bonds opens up a lot of related facts that can speed up your mental arithmetic.
Related topics:
Below is a table showing the first 8 question answer pairs for the topic "Number bonding to 200" as used in the lessons for this topic. Our games and tests for the topic use these 8 items plus 22 additional question answer pairs.
The topic "Number bonding to 200" is in the category Addition for 4th grade (ages 9 to 10).
Revise 'Number bonding to 200' with one of our games for 4th grade
Each of our math topics for elementary are made up of between 6 and 20 question and answer pairs (both the written form and a robot voice speaking those questions and answers). Each topic can be used with all the activities on the site.
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