Learning Resources Math Whiz Handbuch PDF herunterladen (Seite 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

1 2 ... 5 6 7 8 9 10 11 12 13 14 15

Keine Kommentare

Learning Resources Math Whiz Handbuch Seite 10