Rounding and Estimation

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Presentation transcript:

Rounding and Estimation Next

Can I round a two digit number to the nearest 10? Can I round a three digit number to the nearest 10? Can I estimate calculations using rounding skills? Next

What is 13 rounded to the nearest 10? 15 22 30 10 40 100 7

You have found the correct answer. Brilliant! You have found the correct answer. Next Q

Try again! Have another go. Back

What is 43 rounded to the nearest 10? 20 67 12 10 40 50 8

You have found the correct answer. Brilliant! You have found the correct answer. Next Q

Try again! Have another go. Back

What is 67 rounded to the nearest 10? 30 70 8 11 100 50 98

You have found the correct answer. Brilliant! You have found the correct answer. Next Q

Try again! Have another go. Back

Shall we make it harder? Next

What is 114 rounded to the nearest 10? 100 130 115 120 150 110 7

You have found the correct answer. Brilliant! You have found the correct answer. Next Q

Try again! Have another go. Back

What is 155 rounded to the nearest 10? 160 100 150 10 120 50 200

You have found the correct answer. Brilliant! You have found the correct answer. Next Q

Try again! Have another go. Back

What is 299 rounded to the nearest 10? 240 130 13 300 100 50 290

You have found the correct answer. Brilliant! You have found the correct answer. Next Q

Try again! Have another go. Back

Activity: Tarsia Puzzle you have 15 minutes to piece together the puzzle

Estimation and Rounding What is… 53 + 26 = 79 50 30 + = 80

67 + 112 = 179 70 110 + = 180

45 + 233 = 278 50 230 + = 280

Activity…

Mr. Ferry Shopping… 7.98 7.90 Milk £1.03 £1.00 Bread £0.73 £0.70 Chocolate £2.34 Chicken £3.45 Beans £0.43 £1.00 £0.70 £2.30 £3.50 £0.40 7.98 7.90