Use properties in mental math to find the sub of 204 87 three and 16

Answer 1

To find the sum of 204, 87, 3, and 16 using properties of mental math, we can group the numbers in convenient ways.

1. First, we can group 204 and 87: \[ 204 + 87 = 291 \]

2. Next, we can add 3 and 16: \[ 3 + 16 = 19 \]

3. Now, add the two results together: \[ 291 + 19 = 310 \]

Thus, the sum of 204, 87, 3, and 16 is 310.