Page 17 - steps 3b.pdf

RMlq

Addition (1) 3b:6

[JJ Use your calculator to find the missing numbers.

a CD[!l[!l[!)OOEl 176.

b [!l CD [!) 0 0 0 El [ '--____ .:...=1 ~-=-lg~.

c [!l CD [!l [!) 0 0 0 El ['--____ L -'----C1 " ---,-"-I-=-,.

d [!l CD [!J [!) 0 0 0 El ['-----__ ---=-3=--=5 E ,-------,l.
e El El [!l [!) 0 0 El ['---____ -----'-L/-=S ---'-' 7~.

f 0 0 0 [!) [!l@}CDEl ['--____ L--=l = =---=1 S--.J.

[gJ Continue these patterns.

b
104 + 20 = 124 201 + 0 = 201

124 + 20 = 144 201 + 10 = 211
144 + 20 = 201 + 20 = 221

c Invent 2 addition patterns of your own
which use some 3-digit numbers.

Combining 2- and 3-diglt numbers.
Name
Materials: calculator
Date

© 1993 Collins Educational (an imprint of HarperCollinsPub/ishers) STEPS 3b