Answer:
The required number sentence is 6 + 21 = 27.
Step-by-step explanation:
We are required,
To write a number statement in order to add 6 ones to 21.
Now as we know,
'Ones' refer to the unit number 1.
Then '6 ones' means that the number is 6×1 = 6
Thus, we get that,
The sum of '6 ones and 21' is 6 + 21 = 27.
Hence, the required number sentence is 6 + 21 = 27.
