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Published byKaitlyn Larsen Modified over 2 years ago

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L.O.1 To be able to find fractions of numbers and quantities

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We are going to play Four in a row Listen carefully to the instructions.

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L.O.2 To be able to use informal pencil and paper methods to support, record or explain divisions; to extend written methods to HTU÷U; to choose and use appropriate ways of calculating mental, mental with jottings, written methods.

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. Q. A school has 392 chairs. How many tables can be equipped with 4 chairs each? Q. How could we work this out?

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Our sum will be 392 ÷ 4 Q. Approximately how many tables can be equipped?

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392 ÷ 4 We know that 90 x 4 = 360 and 100 x 4 = 400 so our answer will be between 90 and 100. Work in pairs to solve this problem on your whiteboards.

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There should be 98 tables with four chairs around each! How did you do it?

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You have a copy of Activity Sheet 3.1 You should choose an appropriate method for the calculations (mental, jottings or written) but not use calculators. Record your calculations on the sheet.

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Q. Which shapes have left us with spare chairs? 392 is exactly divisible by 4, 8, and 7 – no spare chairs - but has a remainder when divided by 5, 6 and 9 – spares! Q. How do we know when a number is divisible by 2? Q. What does divisible mean? To be divisible by 2 the last digit must be AN EVEN NUMBER.

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Q. How do we know when a number has 4 as a factor i.e. is divisible by 4? Which of these have 4 as a factor? 222 267 232 168 145783 124 444 312 516

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These have 4 as a factor because the LAST 2 DIGITS are divisible by 4. 232 32 168 68 124 24 444 44 312 12 516 16

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Q. How do we know when a number can be divided by 5 without a remainder i.e. has 5 as a factor? Write some numbers which do and some which do not have 5 as a factor. Use columns.

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By the end of the lesson the children should be able to : Discuss, explain and compare methods; use multiples of the divisor; solve problems involving HTU ÷ U calculations

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