Page 18 - steps 3b.pdf

RM20

Addition (1) 3b:6

rn Draw a circle around the answer most likely to be correct.
The first one has been done for you.

a 136 + 42 = 278 78

b 67 + 27 = lq4 q4

c 2qO + 21 = 311 411

d 68 + 428 = 3q6 4q6 5q6

e 125 + 125 = 200 250 300

f 367 + 65 = 482 532 432

213 + qq = 312 412 212
9
,\1/"// / /
,\ '

I'm using a calculator
to check my answers.

[g] Now try these.

rounds off to will have a total of about
• •
36 .. 40 36 + 57 ~ 40 + 60 .. 100
..
57 ~ 60 163 + 2q ~

2q ~ 1 q5 + 2q ~ ~
..
302 ~ 57 + 302 ~
..
163 ~ 1 q5 + 302 •

1QS ~ 36 + 163 ~ •

163 + 1 Q5 .. ~

Approximating and considering the reasonableness of
Name answers.

Date Mat erials: calculat or

© '993 Collins Educational (an imprint of HarperCollinsPublishers) STEPS 3b