Question

solve 2 tens • 3 tens, and add 1 bundled hundred.
$3.8•2.2\approx8$
$\

$$\begin{array}{r}38\\\\×22\\hline76\\\\□60\\end{array}$$

$

Explanation:

Step1: Calculate 2 tens × 3 tens

2 tens = $2 \times 10 = 20$, 3 tens = $3 \times 10 = 30$
$20 \times 30 = 600$

Step2: Add 1 bundled hundred

1 bundled hundred = $1 \times 100 = 100$
$600 + 100 = 700$

Step3: Fill the multiplication blank

For $38 \times 22$, the second partial product comes from $38 \times 20 = 760$, so the blank is 7.

Answer:

1. Result of 2 tens × 3 tens plus 1 hundred: 700
2. Missing digit in the multiplication: 7