Year 3 Block A: - Suffolk Learning

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6 of 20 The National Strategies ⏐ PrimaryYear 3 Block A: Counting, partitioning and calculatingAssessment focus: Ma2, Solving numerical problemsLook for children who can choose the appropriate operation when solving problems. Forexample, in a problem involving several toy railway carriages of the same length, they might userepeated addition to find the total length of a ‘train’ of carriages placed end to end.00543-2008DOM-EN-11 © Crown copyright 2009
7 of 20 The National Strategies ⏐ PrimaryYear 3 Block A: Counting, partitioning and calculatingObjectivesChildren's learning outcomes are emphasised• Describe and explain methods, choices andsolutions to puzzles and problems, orally and inwriting, using pictures and diagramsI can explain how I solve problems• Read, write and order whole numbers to at least1000 and position them on a number line; counton from and back to zero in single-digit steps ormultiples of 10I can read and write numbers to 1000 and putthem in order• Partition three-digit numbers into multiples of100, 10 and 1 in different waysI can split a number into hundreds, tens andonesI can explain how the digits in a number changewhen I count in 10s or 100s• Derive and recall all addition and subtractionfacts for each number to 20, sums anddifferences of multiples of 10 and number pairsthat total 100I know the sum and difference of any pair ofnumbers to 20I can add and subtract multiples of 10 or 100 inmy headAssessment for LearningTell me how you solved this problem. Why did youdecide to subtract these numbers?Did you do that calculation in your head? Tell mehow you did it. Show me how to do that calculationon an empty number line.Suppose the problem had these numbers. Wouldthat change the way you would solve the problem?Here is a number: 472. Read it to me. Writeanother three-digit number and read it to me. Is itbigger than or smaller than 472?Draw an empty number line and mark the numbers456, 465 and 516 on it.Tell me where to put these numbers on thenumber line: 581, 418, 560, 509 and 495. How doyou find the smallest number/the largest number?What clues do you use?Here are some ways of partitioning 346.346 = 300 + 46346 = 300 + 40 + 6346 = 300 + 30 + 16346 = 200 + 120 + 26Write four more ways of partitioning 346.A number is partitioned like this: 200 + 50 + 13.What is the number? Show me how to partition it inother ways.How could you partition 408? Show me anotherway to do it.Use these digit cards. Make the number 346 forme. What does the 3 represent? And the 4?[Remove the 6.] What number do you have now?What does the 3 represent now? And the 4?Look at this number sentence: + = 19. Whatcould the two missing numbers be? What else?Can you tell me all the pairs of numbers that make19? How do you know you have got them all?What is 13 – 8? What other subtractions make 5?Add or subtract these numbers. Tell me how youdid it.30 + 80 70 – 50800 + 500 900 – 40038 + 40 80 – 2700543-2008DOM-EN-11 © Crown copyright 2009
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Year 3 Block A: - Suffolk Learning

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