Without a calculator add the following two numbers: 52 + 68. The units 2 and 8 form

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Without a calculator add the following two numbers: 52 + 68.
The units 2 and 8 form a number bond to 10. Therefore the calculation can be worked out by adding together 50 + 60 + 10 = 120.
This can also be visualised using a number line.

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Cambridge Checkpoint Lower Secondary Mathematics Student's Book 7

ISBN: 9781398301948

3rd Edition

Authors: Frankie Pimentel, Ric Pimentel, Terry Wall

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Question Posted: Feb 06, 2023 01:12 AM

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Without a calculator add the following two numbers: 52 + 68. The units 2 and 8 form

Question:

40 50 60 +60 +10 70 80 90 100 110 120 130

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To add 52 68 without using a calculator you can u...View the full answer

Cambridge Checkpoint Lower Secondary Mathematics Student's Book 7

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