Question

Observe the model and identify the missing numbers in the given subtraction equation.

Equation:
43 – ___ = ___

• A. $23,20$
• B. $22,21$
• C. 2, 20
• D. $21,20$

Answer 1

The correct option is B $22,21$

Detailed step-by-step solution:
In the given model, we can see that the first missing number is decomposed into 20 and 2. Then on subtracting 20 from 43 we get 23. Then 2 is subtracted from 23.
So, the first missing number is 20 + 2 = 22 and the second missing number is 23 – 2 = 21.

Hence, Option B is the correct answer.