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### Transcript of Kungfu math p4 slide14 (multiplication decimals)pdf

• 1. Decimals MultiplicationWhat will we learn today? multiplication of decimals (up to 2 decimal places) by a 1-digit whole number
• 2. In the previous lectures, we have learnt aboutaddition and subtraction in decimals. Lets recap!
• 3. Applyingwhat we have learnt
• 4. Try this out!Mr Li used 2.5kg of rice on Monday and 1.75 kgon Tuesday. He used a total of 9 kg Monday andWednesday. How much rice did he use onWednesday?
• 5. SolutionMr Li used 2.5kg of rice on Monday and 1.75 kgmore on Tuesday. He used a total of 9 kg fromMonday to Wednesday.How much rice did he use on Wednesday? Step 1: 2.5kg + 1.75kg =___kg
• 6. SolutionMr Li used 2.5kg of rice on Monday and 1.75 kgmore on Tuesday. He used a total of 9 kg fromMonday to Wednesday.How much rice did he use on Wednesday? 2.50 + 1.75 Step 1: 2.5kg + 1.75kg = 4.25kg He used 4.25kg of rice on Tuesday.
• 7. SolutionMr Li used 2.5kg of rice on Monday and 1.75 kgmore on Tuesday. He used a total of 9 kg fromMonday to Wednesday.How much rice did he use on Wednesday? 2.50 + 4.25 Step 2: 2.5kg + 4.25kg = 6.75kgHe used 6.75kg of rice on Monday and Tuesday.
• 8. SolutionMr Li used 2.5kg of rice on Monday and 1.75 kgmore on Tuesday. He used a total of 9 kg fromMonday to Wednesday.How much rice did he use on Wednesday? 9.00 - 6.75 Step 3: 9.00 kg - 6.75kg = 2.25 kg He used 2.25kg of rice on Wednesday.
• 9. Multiplication in decimals
• 10. Try this out!1. The length of ribbon A is 10.08 m. Ribbon B is 3 times as long as ribbon A. Find the length of ribbon B.
• 11. Try this out!1. The length of ribbon A is 10.08 m. Ribbon B is 3 times as long as ribbon A. Find the length of ribbon B.Lets draw models to help us visualize the scenario.
• 12. Try this out!1. The length of ribbon A is 10.08 m. Ribbon B is 3 times as long as ribbon A. Find the length of ribbon B. 10.08m A
• 13. Try this out!1. The length of ribbon A is 10.08 m. Ribbon B is 3 times as long as ribbon A. Find the length of ribbon B. 10.08m A B
• 14. Try this out!1. The length of ribbon A is 10.08 m. Ribbon B is 3 times as long as ribbon A. Find the length of ribbon B. 10.08m A B ?
• 15. Try this out!1. The length of ribbon A is 10.08 m. Ribbon B is 3 times as long as ribbon A. Find the length of ribbon B. 10.08m 10.08 x 3 =_____m A B ?
• 16. Do multiplication workings accordingly 10.08 x 3
• 17. Do multiplication workings accordingly +2 10.08 x 3 4
• 18. Do multiplication workings accordingly +2 10.08 x 3 24
• 19. Do multiplication workings accordingly 10.08 x 3 .24Place the decimal place in a straight line.
• 20. Do multiplication workings accordingly 10.08 x 3 0.24
• 21. Do multiplication workings accordingly 10.08 x 3 30.24
• 22. Try this out!1. The length of ribbon A is 10.08 m. Ribbon B is 3 times as long as ribbon A. Find the length of ribbon B. 10.08m 10.08 x 3 =30.24m A B 30.24m
• 23. Are you ready to try out the questions?
• 24. Visit kungfumath.sg today!