Multiplying a decimal number by a whole number, understanding how to place the decimal point in the answer.
Where your child meets this in real life: Calculating costs (e.g., 4 × £2.75), or scaling measurements
SEAGReady breaks multiply decimals by whole numbers into 3 steps, taught in order so each skill builds on the last.
Multiply a decimal number with one decimal place by a single-digit whole number (e.g., 3 × 1.5 = 4.5)
Multiply a decimal number with two decimal places by a single-digit whole number (e.g., 4 × 2.75 = 11)
Multiply a decimal number by a two-digit whole number using long multiplication (e.g., 15 × 2.4 = 36.0)
Three free sample questions from our multiply decimals by whole numbers course. Every question comes with a full explanation, and hints that guide without giving the answer away.
Hannah needs 3 pieces of ribbon, each 1.4 metres long. What is their total length?
Grace buys 4 bottles of juice. Each bottle costs £1.25. What is the total cost?
A piece of fabric costs £1.5 per metre. Mrs O'Neill buys 14 metres for the school play costumes. How much does she pay?
This is the exact interactive worked example your child sees in SEAGReady. Step through it and watch the method build up.
A craft project needs 3 pieces of ribbon, each 1.4 metres long.
What is the total length of the ribbon?
3 × 1.4
Ignore the decimal point for now
Step 1 of 4
A craft project needs 3 pieces of ribbon, each 1.4 metres long.
What is the total length of the ribbon?
The total length of the ribbon is 4.2 metres.
The key insight: The answer has the same number of decimal places as the decimal you started with!
Common mix-up: 3 × 1.4 = 42. Forgetting to put the decimal point back gives an answer 10 times too big.
These are the misconceptions we see most often in multiply decimals by whole numbers, including the ones our practice questions are specifically designed to catch.
Struggling with multiply decimals by whole numbers? The real gap is often in one of these earlier topics.
SEAGReady finds the exact step where your child gets stuck, teaches it with worked examples like the one above, and brings it back for review so it sticks.
Free to start · no card needed