Learning Resources Math Whiz Manuel télécharger pdf (Page 10)

Level 6: Add three 1-digit numbers.

Level 7: Add 2-digit numbers to 1-digit numbers or

2-digit numbers with regrouping.

Level 8: Intr

oduces the pre-algebra concept of finding the missing number

(shown as

?).

3 + 5 + 4 = ?

28 + 9 = ?

2 + ? = 9

? + 70 = 80

45 + 36 = ?

Suggestions for mental reminders in adding three numbers:

• Add the first two numbers, then add the sum to the third.

• Add the easier two numbers, then add the sum to the third.

Reminder

Determine the answer “mentally” and enter the whole answer.

Reminder

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Learning Resources Math Whiz Manuel Page 10