Question

a
\

$$\begin{array}{r} 47 \\\\ \\times 63 \\\\ \\hline \\end{array}$$

b
\

$$\begin{array}{r} 86 \\\\ \\times 25 \\\\ \\hline \\end{array}$$

(image of a box)
\

$$\begin{array}{r} 95 \\\\ \\times 70 \\\\ \\hline \\end{array}$$

d
\

$$\begin{array}{r} 78 \\\\ \\times 39 \\\\ \\hline \\end{array}$$

e
\

$$\begin{array}{r} 63 \\\\ \\times 48 \\\\ \\hline \\end{array}$$

f
\

$$\begin{array}{r} 59 \\\\ \\times 96 \\\\ \\hline \\end{array}$$

g
\

$$\begin{array}{r} 24 \\\\ \\times 57 \\\\ \\hline \\end{array}$$

h
\

$$\begin{array}{r} 96 \\\\ \\times 86 \\\\ \\hline \\end{array}$$

i
\

$$\begin{array}{r} 85 \\\\ \\times 62 \\\\ \\hline \\end{array}$$

j
\

$$\begin{array}{r} 98 \\\\ \\times 74 \\\\ \\hline \\end{array}$$

k how many seconds are there in 35 minutes?
answer:

Explanation:

For the multiplication problems (e.g., \(

$$\begin{array}{r}47\\\times63\\\hline\end{array}$$

\)):

Step 1: Multiply by the ones digit

For \( 47\times63 \), first multiply \( 47 \) by \( 3 \): \( 47\times3 = 141 \).

Step 2: Multiply by the tens digit

Then multiply \( 47 \) by \( 60 \) (since \( 6 \) is in the tens place): \( 47\times60 = 2820 \).

Step 3: Add the two results

Add \( 141 \) and \( 2820 \): \( 141 + 2820 = 2961 \).

For the "How many seconds are there in 35 minutes?" problem:

Step 1: Recall the conversion factor

We know that \( 1 \) minute \( = 60 \) seconds.

Step 2: Multiply minutes by seconds per minute

To find the number of seconds in \( 35 \) minutes, multiply \( 35 \) by \( 60 \): \( 35\times60 = 2100 \).

Answer:

s for multiplication examples:

• \( 47\times63 = 2961 \)
• \( 86\times25 \):
• Step 1: \( 86\times5 = 430 \)
• Step 2: \( 86\times20 = 1720 \)
• Step 3: \( 430 + 1720 = 2150 \)
• \( 95\times70 \):
• Step 1: \( 95\times0 = 0 \) (ones place, but we can also think of it as \( 95\times7\times10 \))
• Step 2: \( 95\times7 = 665 \), then \( 665\times10 = 6650 \)
• \( 78\times39 \):
• Step 1: \( 78\times9 = 702 \)
• Step 2: \( 78\times30 = 2340 \)
• Step 3: \( 702 + 2340 = 3042 \)
• \( 63\times48 \):
• Step 1: \( 63\times8 = 504 \)
• Step 2: \( 63\times40 = 2520 \)
• Step 3: \( 504 + 2520 = 3024 \)
• \( 24\times57 \):
• Step 1: \( 24\times7 = 168 \)
• Step 2: \( 24\times50 = 1200 \)
• Step 3: \( 168 + 1200 = 1368 \)
• \( 96\times86 \):
• Step 1: \( 96\times6 = 576 \)
• Step 2: \( 96\times80 = 7680 \)
• Step 3: \( 576 + 7680 = 8256 \)
• \( 85\times62 \):
• Step 1: \( 85\times2 = 170 \)
• Step 2: \( 85\times60 = 5100 \)
• Step 3: \( 170 + 5100 = 5270 \)
• \( 98\times74 \):
• Step 1: \( 98\times4 = 392 \)
• Step 2: \( 98\times70 = 6860 \)
• Step 3: \( 392 + 6860 = 7252 \)