© Hamilton Trust Stepping Up Term 3 Week 1 Day 1 Rounding – Objectives Objective Round whole numbers to the nearest 10 or 100. You may need: Mini whiteboards, students’ books © Hamilton Trust Stepping Up Term 3 Week 1 Day 1

40 Rounding – Direct Teaching 37 Which tens numbers is 37 between? 37 Which of these is it closer to? 40 We say that ‘37 rounded to the nearest ten is 40’… © Hamilton Trust Stepping Up Term 3 Week 1 Day 1

Rounding – Direct Teaching Start with 73 and move clockwise to reveal the multiple of 10 that each number rounds to. 70 100 40 70 130 Discuss how a halfway number (e.g. 125) rounds up; anything less (e.g. 42) rounds down. 120 100 90 60 40 © Hamilton Trust Stepping Up Term 3 Week 1 Day 1

Rounding – Direct Teaching Can you mark the following numbers on the line? 493 249 350 625 887 Use animation to move the numbers. Discuss how a halfway number (e.g. 350) rounds up; anything less (e.g. 249) rounds down. Which 100s number is each nearest? © Hamilton Trust Stepping Up Term 3 Week 1 Day 1

Rounding – Student Activity With a partner, choose a multiple of 100 (100 to 1000); write it clearly on your whiteboard. Hold up your board if the numbers that come up round to your multiple of 100! 289 Use animation to reveal the numbers. Watch out for students who don’t realise that numbers ending in 50 need to be rounded up when rounding to the nearest 100. 849 550 174 418 539 857 418 726 53 © Hamilton Trust Stepping Up Term 3 Week 1 Day 1

Rounding – Individual Practice Can you work through two of these three sections? Round to nearest 10: Round to nearest 100: Round to nearest 10 and nearest 100: 726 726 123 123 256 963 950 950 52 52 755 92 349 349 507 507 315 550 148 148 148 250 250 886 886 Support weaker students by using practical resources, such as dry-wipe number lines. 812 665 229 229 357 567 567 705 © Hamilton Trust Stepping Up Term 3 Week 1 Day 1