© Hamilton Trust Stepping Up Term 3 Week 7 Day 2 Addition – Objectives Objective Use mental strategies to add pairs of two-digit numbers with one decimal place. You may need: mini whiteboards students’ books © Hamilton Trust Stepping Up Term 3 Week 7 Day 2

= 7.4 Addition – Direct Teaching 2.6 + = 10 7 0.4 10 2.6 Remember how to count on from a one-place decimal to find the complement to 10…? 2.6 + = 10 1 2 3 4 5 6 7 8 9 10 2.6 = 7.4 2.6 10 3.0 0.4 7 © Hamilton Trust Stepping Up Term 3 Week 7 Day 2

Addition – Student Activity Partner talk Work in pairs to write as many pairs of numbers with one decimal place, with a total of 10 as you can in two minutes! © Hamilton Trust Stepping Up Term 3 Week 7 Day 2

Addition – Direct Teaching How does what we did last time help with these addition calculations…? 4.7 + 2.3 5.4 + 1.9 8.5 + 4.1 7.8 + 5.6 © Hamilton Trust Stepping Up Term 3 Week 7 Day 2

Addition – Direct Teaching We can use the same strategies for adding pairs of decimals and whole numbers! 5.4 + 1.9 Add and adjust… 5.4 + 2 – 0.1 4.7 + 2.3 Number bonds… 0.3 and 0.7 make 1; 4 + 2 + 1 7.8 + 5.6 Partition…7 + 5, 0.8 + 0.6: 12 + 1.4 8.5 + 4.1 Count on… 8.5 + 4 + 0.1 © Hamilton Trust Stepping Up Term 3 Week 7 Day 2

Addition – Individual Practice Another round of Addition Bingo...? Choose any five of these numbers: Arrange your totals in a 5-spot pattern. First to cross off all 5 totals wins! Eyes down… 1.5 + 1.9 5.9 + 1.4 2.8 and 2.3 1.1 + 7 1 + 5.3 6 more than 3.6 1.4 plus 7.5 4.7 + 4.5 2.4 add 1.3 Increase 3.6 by 3.9 2.7 + 4.1 1.8 + 2.9 1.2 plus 3.1 1.6 + 4 © Hamilton Trust Stepping Up Term 3 Week 7 Day 2