To find the addition that doubles to equal 21, you can divide 21 by 2, which gives you 10.5. This means that the two equal additions are 10.5 and 10.5. Therefore, 10.5 + 10.5 = 21.
There are several addition sentences that equal 28, such as 14 + 14, 10 + 18, and 20 + 8. Other examples include 5 + 23 and 7 + 21. Essentially, any combination of two or more numbers that adds up to 28 can be considered an addition sentence equal to 28.
21%
To find the addition that doubles to equal 4 + 3, you can use the fact that 3 + 3 equals 6. Since 4 + 3 equals 7, you can think about how the addition of 4 and 3 relates to the double of a smaller number. Specifically, knowing that 3 + 3 equals 6 can help you see that you need to add one more to reach 7.
21
0.21 = 21% or 21/100
There are several addition sentences that equal 28, such as 14 + 14, 10 + 18, and 20 + 8. Other examples include 5 + 23 and 7 + 21. Essentially, any combination of two or more numbers that adds up to 28 can be considered an addition sentence equal to 28.
100 plus 21 is equal to 121. This is a basic addition operation where you are combining the two numbers together to find the total sum. In mathematics, addition is a fundamental arithmetic operation that represents combining two or more numbers to get a total quantity.
21 and 21 equal 42.
37
21 + 21 = 42.
fractions which are equal to 21 = 21/1, 42/2, 63/3,...
21%
21
3x7 = 21
About 8.3 inches.
2 / 21 is equal to 0.0952380952380952380952380952381(0.095)
To find the addition that doubles to equal 4 + 3, you can use the fact that 3 + 3 equals 6. Since 4 + 3 equals 7, you can think about how the addition of 4 and 3 relates to the double of a smaller number. Specifically, knowing that 3 + 3 equals 6 can help you see that you need to add one more to reach 7.