Year 2 Recall/Jottings: Objectives: Using known facts If I know: Written Methods with representations Show that addition of two numbers can be done in any 2+3 = 5 Recording addition and subtraction in columns supports order and subtraction cannot. I also know: place value and prepares for formal written methods. 3+2 = 5 20 + 30 = 50 30 + Tens Ones 20 = 50 Recall and use addition and 50—30 = 20 subtraction facts to 20 fluently = 30 and derive and use related facts Bridge through 10 up to 100. 26 + 7 = 26 + 4 + 3 26 + 4 = 30 Add and subtract numbers 30 + 3 = 33 concrete objects, pictorial Counting on/back in10s presentations and mentally 26 + 20 = including: 67-20 2 digit number and ones Partitioning 23 + 34 = 46—25 2 digit number and tens Special Strategy Rounding and adjusting + 9—9 +11—11 Two 2 digit numbers Bonds to 10 2+7+8=8+2+7 Finding the difference between two numbers. 71 - 37: Add three 1 digit numbers Solve problems with addition Tens Ones and subtraction: • using concrete objects and Partitioning numbers in different ways in preparation for pictorial representations, including those involving subtracting using decomposition: numbers, quantities and 90 + 2 80 + 12 (I have subtracted a ten and added it onto the ones) measures • applying their increasing Continue to record mental jottings as outlined in Year 2 with knowledge of mental and increasingly larger numbers. Use suitable resources as required (See models and images page). written methods Encourage children to recognise this can be completed mentally: Children that have not achieved the age related expectations for Year 42 40 + 2 30 + 12 42 - 15 = 27 2 should not move onto formal written methods until they are secure -15 10 + 5 10 + 5 with mental recall/jottings. 20 + 7 5
Year 2 Objectives: Show that addition of two numbers can be done in any order and subtraction cannot. Recall and use addition and subtraction facts to 20 fluently and derive and use related facts up to 100. Add and subtract numbers concrete objects, pictorial presentations and mentally including: 2 digit number and ones 2 digit number and tens Two 2 digit numbers Add three 1 digit numbers Solve problems with addition and subtraction: • using concrete objects and pictorial representations, including those involving numbers, quantities and measures • applying their increasing knowledge of mental and written methods Recall/Jottings: Using known facts If I know: 2+3 = 5 I also know: 3+2 = 5 20 + 30 = 50 30 + 20 = 50 50—30 = 20 = 30 Bridge through 10 26 + 7 = 26 + 4 + 3 26 + 4 = 30 30 + 3 = 33 Counting on/back in10s 26 + 20 = 67-20 Partitioning 23 + 34 = 46—25 Special Strategy Rounding and adjusting + 9—9 +11—11 Bonds to 10 2+7+8=8+2+7 Finding the difference between two numbers. 71 - 37: Partitioning numbers in different ways in preparation for subtracting using decomposition: 90 + 2 80 + 12 (I have subtracted a ten and added it onto the ones) Continue to record mental jottings as outlined in Year 2 with increasingly larger numbers. Use suitable resources as required (See models and images page). Children that have not achieved the age related expectations for Year 2 should not move onto formal written methods until they are secure with mental recall/jottings. Written Methods with representations Recording addition and subtraction in columns supports place value and prepares for formal written methods. Tens Ones Tens Ones Encourage children to recognise this can be completed mentally: 42 40 + 2 30 + 12 42 - 15 = 27 -15 10 + 5 10 + 5 20 + 7 5
Calculations-October-20151.docx