 |
|
||||
| Home | Blog | My books! | Newsletter | Worksheets | Lessons | Videos | Online math resources | Reviews | Curriculum guide |
|
Maria's Math news - a monthly FREE newsletter filled with math teaching information. Subscribe below: Latest from my blog This is where you'll find the latest happenings, news, & ideas in math teaching Math teaching videos My videos at YouTube show you how to teach concepts. 
Structured drill of multiplication tables—much more effective than random drill!
Worksheets Various worksheets on TONS of math topics you can generate for free! Curriculum Advice, reviews, and resources to help you choose a math curriculum! Online math games, tutorials, and activities Games you can play online, interactive tutorials, fun math websites and more. Arranged by topic/level for ease of use. Articles Learn how to TEACH concepts or about general concerns in math education. Reviews In-depth reviews of math products Math help & tutoring A list of free message boards, math help websites, and online tutoring services. My Amazon Store See some math products I recommend. Fun and games I have two games on my site, plus links to many. Game: Choose Math Operation Word guess game (easy hangman) Word guess game (difficult) |
The ideas in this addition lesson are taken from Add & Subtract 2-B ebook. Only a few examples of each problem type are shown; you should make more problems of each kind for the student. Add or subtract whole tens mentally
|
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
|
||||||||||||||||||||
|
|
||||||||||||||||||||
|
The _________ digit does not change. |
|||||||||||||||||||||
Look at the pictures. Cross out as many ten-pillars as the problem indicates. What is left?
|
|
|
|
||||||||||||||||
|
|
|
|
||||||||||||||||
|
The ___________ digit does not change. |
|||||||||||||||||||
Example problem types
1. Make an addition sentence that fits the picture. Draw more ten-pillars and one-squares to the answer picture.
|
|
2. Remember, you can add both ways. 52 + 10 is the same as 10 + 52.
| a.
10 + 34 = __ 18 + 10 = __10 + 15 = __ 10 + 45 = __ |
d.
30 + 40 = __ 30 + 45 = __55 + 30 = __ 30 + 62= __ |
3. Add 10 each time. Add 20 each time. Add 30 each time.
|
+ 10
|
+ 30
|
4. Subtract. Compare the problems.
| 40 10 = __
4 1 = __ |
50 20 = __
5 2 = __ |
60 30 = __
6 3 = __ |
80 20 = __
8 2 = __ |
5. Subtract whole tens.
| 40 20 = __
90 10 = __ 80 40 = __ |
90 30 = __
60 10 = __ 70 30 = __ |
60 50 = __
90 60 = __ 50 20 = __ |
6. Count by tens backwards:
|
100, 90, ___, ___, ___, ___, ___ 78, 68, ___, ___, ___, ___, ___ |
76, 66, ___, ___, ___, ___ ___, ___, ___, 54, 44, ___ |
|
|
95, 85, ___, ___, ___, ___, ___ ___, ___, ___, 63, 53, ___, ___ |
70, 60, ___, ___, ___, ___ 87, 77, ___, ___, ___, ___ |
7. Fill in the missing minuends.
| __ 10 = 45 __ 10 = 67 __ 10 = 22 __ 10 = 55 __ 10 = 18 |
__ 30 = 36 __ 40 = 52__ 50 = 49 __ 40 = 21 __ 50 = 17 |
8. Find the pattern and continue it.
| 88 10 = __
88 20 = __ 88 30 = __ 88 __ = __ __ __ = __ __ __ = __ __ __ = __ __ __ = __ |
34 10 = __
44 20 = __ 54 30 = __ __ __ = __ __ __ = __ __ __ = __ __ __ = __ __ __ = __ |
|
What numbers can go into the puzzles? All numbers are less than
100
|
The fast, FUN, and easy way to learn multiplication. Learn the upper times tales in two sittings using mnemonic stories.
|
Copyright 2003-2012 Maria Miller
About
Privacy policy
Contact