حل درس Explain the Reasonableness of a solution بوربوينت في الرياضيات باللغة الإنجليزية للصف الثالث (2)

Unit 10 .. ..Lesson 6.

Explain the، Reasonableness of، a solution

By the end of this lesson, you will be able to :

Use mental computation and estimation strategies to assess the reasonableness of answers to a two-step problem..

3 x 9 = 27

27 + 4 = $ 31

42 ÷ 6 = 7

7 + 4 = 11 stickers

The answer is reasonable 3 + 8 = 11

11 x 5 = 55 minutes

The answer is unreasonable 4 x 8 = 32

$32 + $36 = $68 its not $98

7 x 9 = 63 63 – 49 = 14 pencils.

80 - 24 = 56 56 ÷ 8 = 7 beads.

Yes .. 6 x 9 = 54 54 + 5 = 59 boxes