how to show the working out for
1.3*1.8
http://www.mathsisfun.com/multiplying-decimals.html
Who needs help? Abigail or Kirsty?
Both should study the website linked above.
1.8*1.3= 2.34
To show the working out for multiplying 1.3 by 1.8, you can follow these steps:
Step 1: Write down the multiplication problem:
1.3 * 1.8
Step 2: Align the numbers vertically with the decimal points:
1.3
× 1.8
______
Step 3: Start with the rightmost digit (0 in 1.8) and multiply it by each digit in the first number (1.3). Write down each partial product:
1.3
× 1.8
______
2.6 <- partial product of 0.1 multiplied by 1.3
Step 4: Shift the partial product to the left by one place and write a zero in the units place (multiply it by 10):
1.3
× 1.8
______
2.6 <- partial product of 0.1 multiplied by 1.3 (shifted left)
+0 <- zero in the units place
Step 5: Now, multiply the next digit in the second number (1 in 1.8) by each digit in the first number (1.3). Write down each partial product:
1.3
× 1.8
______
2.6 <- partial product of 0.1 multiplied by 1.3 (shifted left)
+0 <- zero in the units place
+1.3 <- partial product of 1 multiplied by 1.3
Step 6: Add all the partial products together:
1.3
× 1.8
______
2.6 <- partial product of 0.1 multiplied by 1.3 (shifted left)
+0 <- zero in the units place
+1.3 <- partial product of 1 multiplied by 1.3
______
2.34 <- sum of all the partial products
Therefore, 1.3 multiplied by 1.8 equals 2.34.