Question

1. which is the difference? 3.ns0.2.1

$\begin{array}{r} 851\\ -374\\ hline end{array}$
a 577
b 483
c 477
d 473

1. what is the missing digit in the subtraction statement? 3.ns0.2.1

$\begin{array}{r} 526\\ -3square7\\ hline 139end{array}$
5
7
8
9

Explanation:

Step1: Solve Question 14: Subtract ones place

$1 - 4$ requires borrowing: $11 - 4 = 7$; tens place of 851 becomes 4.

Step2: Subtract tens place (Question14)

$4 - 7$ requires borrowing: $14 - 7 = 7$; hundreds place of 851 becomes 7.

Step3: Subtract hundreds place (Question14)

$7 - 3 = 4$

Step4: Solve Question15: Find missing tens digit

Let missing digit be $x$. Rearrange subtraction: $526 - 139 = 3x7$

Step5: Calculate 526 - 139 (Question15)

$526 - 139 = 387$, so $x=8$.

Answer:

1. B 483
2. 8