1. 0.3x0.5=0.15
2. 1.2x2.1=2.52
3. 2.5x6.7=16.75
4. 0.4x8.3=3.32
5. 2.3x1.21=2.783
6. 0.6x0.91= 0.546
7. 6.5x 0.04=0.260
8. 8.54x3.27=27.9258
All are correct! :-)
9. 5.02x1.07=5.3714
10. 0.003x2.9=0.0087
11. 0.93x6.8=6.324
12.7.1x0.004=0.0284
13. 3.007x6.1=18.3427
14.2.52x0.15=0.3780
Step-by-step solutions for the given multiplication problems:
1. 0.3 x 0.5 = 0.15
To multiply decimals, multiply the numbers as if they were whole numbers and then shift the decimal point to the left by the total number of decimal places in both factors. In this case, the answer is 0.15.
2. 1.2 x 2.1 = 2.52
Multiply the whole numbers first, and then multiply the decimal numbers.
1 x 2 = 2 (whole number part)
0.2 x 0.1 = 0.02 (decimal part)
Add the results: 2 + 0.02 = 2.02. Therefore, the answer is 2.52.
3. 2.5 x 6.7 = 16.75
Follow the same process as in the previous step.
2 x 6 = 12 (whole number part)
0.5 x 0.7 = 0.35 (decimal part)
Add the results: 12 + 0.35 = 12.35. Therefore, the answer is 16.75.
4. 0.4 x 8.3 = 3.32
Multiply the whole numbers and then multiply the decimal numbers.
4 x 8 = 32 (whole number part)
0.4 x 0.3 = 0.12 (decimal part)
Add the results: 32 + 0.12 = 32.12. Therefore, the answer is 3.32.
5. 2.3 x 1.21 = 2.783
Multiply the whole numbers and then multiply the decimal numbers.
2 x 1 = 2 (whole number part)
0.3 x 0.21 = 0.063 (decimal part)
Add the results: 2 + 0.063 = 2.063. Therefore, the answer is 2.783.
6. 0.6 x 0.91 = 0.546
Follow the same process as mentioned before.
0 x 0 = 0 (whole number part)
0.6 x 0.91 = 0.546 (decimal part)
The answer is 0.546.
7. 6.5 x 0.04 = 0.260
Follow the same process as mentioned before.
6 x 0 = 0 (whole number part)
0.5 x 0.04 = 0.02 (decimal part)
Add the results: 0 + 0.02 = 0.02. Therefore, the answer is 0.260.
8. 8.54 x 3.27 = 27.9258
Follow the same process as mentioned before.
8 x 3 = 24 (whole number part)
0.54 x 0.27 = 0.1458 (decimal part)
Add the results: 24 + 0.1458 = 24.1458. Therefore, the answer is 27.9258.
To calculate these multiplication problems, you can follow the general process:
1. Multiply the first digit of the first number by the second number.
2. Multiply the second digit of the first number by the second number.
3. Add the results of steps 1 and 2 together.
Let's break down the calculation for the first problem, 0.3 x 0.5:
1. Multiply the first digit of the first number (0.3) by the second number (0.5): 0.3 x 0.5 = 0.15.
Therefore, the answer to 0.3 x 0.5 is 0.15. You can apply the same steps to calculate the rest of the problems.