Explanation

√48 ≈ 6.928

Explanation

(1 ÷ 5) × 100 = 20%

Explanation

445 mm - 198 mm + 250 mm = ?

Step 1: 445 - 198 = 247 mm  

Step 2: 247 + 250 = 497 mm  

Convert to cm:  

497 mm = 49.7 cm  

Explanation

1. Ignore the decimals for a moment and multiply the numbers as whole numbers:  

   896 × 70 = 62,720

2. Count the total decimal places in the original numbers:  

   - 0.00896 has 5 decimal places  

   - 0.70 has 2 decimal places  

   Total decimal places = 5 + 2 = 7

3. Place the decimal point in the product so there are 7 digits after it:  

   62,720 → move decimal 7 places left → 0.0062720

So, 0.00896 × 0.70 = 0.006272

Explanation

√4.41 = 2.1

Because:  

2.1 × 2.1 = 4.41

Explanation

To evaluate 5P2 (the permutation of 5 items taken 2 at a time), use the formula for permutations:

Explanation

To evaluate  6C2 (the combination of 6 items taken 2 at a time), use the formula for combinations:

Explanation

0.75 × 0.567 = 0.42525  

0.42525 ÷ 0.134 ≈ 3.172

Explanation

Solution:

Add 0.525 and 0.2:

0.525+0.2=0.725

Now, add 0.725 and 0.5:

0.725+0.5=1.225

Explanation

0.3 x 0.3 x 0.4 _____?

0.3 x 0.3 = 0.09.

0.09 x 0.4 = 0.036.

0.09 x 0.4 = 0.036.