Grade 1: Step Up to Grade 2
Grade 1: Step Up to Grade 2
Grade 1: Step Up to Grade 2
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
© Pearson Education, Inc. 1<br />
Name<br />
Finding Parts of 100<br />
Add on <strong>to</strong> find the other part of 100.<br />
1. 2.<br />
54 46 100 89 11 100<br />
3. 4.<br />
43 57 100 72 28 100<br />
5. 29 71 100 6. 18 82 100<br />
7. 37 63 100 8. 65 35 100<br />
9. The lunchroom holds 100 children. There are 50 children<br />
eating in the lunchroom. How many more can join them?<br />
50 50 100 50 children<br />
Answers: C13, C22, C31, D25<br />
Practice<br />
C13<br />
Practice C13<br />
C13 C22<br />
45093_Practice_A29-D89.indd C13 6/30/08 11:59:57 AM<br />
© Pearson Education, Inc. 1<br />
Name<br />
Estimating Differences<br />
Practice<br />
C31<br />
Estimate by rounding <strong>to</strong> the nearest ten.<br />
1. 92 2. 63 3. 43 32 4. 94 28<br />
_ 56<br />
30<br />
_ 48<br />
10<br />
10<br />
60<br />
5. 89 6. 75 7. 48 18 8. 51 28<br />
_ 48<br />
40<br />
_ 32<br />
50<br />
30<br />
20<br />
9. 23 10. 37 11. 76 53 12. 28 16<br />
_ 18<br />
0<br />
_ 12<br />
30<br />
30<br />
10<br />
Estimate by rounding <strong>to</strong> the nearest hundred.<br />
13. 820 14. 421 15. 637 231 16. 861 375<br />
_ 205<br />
600<br />
_ 196<br />
200<br />
400<br />
500<br />
17. 794 18. 679 19. 916 593 20. 681 232<br />
_ 512<br />
300<br />
_ 199<br />
500<br />
300<br />
500<br />
21. 909 22. 726 23. 694 203 24. 550 414<br />
_ 287<br />
600<br />
_ 204<br />
500<br />
500<br />
200<br />
25. Marlee has 845 baseball cards and Kin has<br />
612 baseball cards. About how many more<br />
baseball cards does Marlee have than Kin?<br />
26. Reasoning What is the smallest number that<br />
can be subtracted from 723 so that the difference<br />
200<br />
is 200 when both numbers are rounded <strong>to</strong> the<br />
nearest hundred?<br />
450<br />
Practice C31<br />
Name<br />
Two-Digit Subtraction<br />
Practice C22<br />
C31 D25<br />
45093_Practice_A29-D89.indd C31 6/30/08 12:00:02 PM<br />
Answers for Practice<br />
C13, C22, C31, D25<br />
Write the subtraction problem. Find the difference.<br />
Practice<br />
C22<br />
1. 64 39 2. 65 16 3. 72 31 4. 56 29<br />
Tens Ones Tens Ones Tens Ones Tens Ones<br />
−<br />
5 14<br />
6 4<br />
3 9<br />
2 5<br />
−<br />
5. 84 25 6. 34 16 7. 96 48 8. 43 27<br />
Tens Ones Tens Ones Tens Ones Tens Ones<br />
−<br />
7 14<br />
8<br />
2<br />
4<br />
5<br />
5 9<br />
4 8<br />
−<br />
5 15<br />
6<br />
1<br />
5<br />
6<br />
4 9<br />
5 6<br />
2 14<br />
3<br />
1<br />
4<br />
6<br />
1 8<br />
4 3<br />
Subtract. Regroup if you need <strong>to</strong>.<br />
9.<br />
92 36 64<br />
− 18 − 25 − 47<br />
−<br />
−<br />
7 2<br />
3 1<br />
4 1<br />
8 16<br />
9<br />
4<br />
6<br />
8<br />
4 8<br />
6 9<br />
18<br />
− 5<br />
86<br />
− 33<br />
−<br />
−<br />
4 16<br />
5<br />
2<br />
6<br />
9<br />
2 7<br />
6 5<br />
3 13<br />
4<br />
2<br />
3<br />
7<br />
1 6<br />
3 4<br />
77<br />
− 69<br />
74 11 17 13 53 8<br />
45093_Practice_A29-D89.indd C22 6/30/08 12:00:00 PM<br />
Name<br />
Inches<br />
Estimate the length of each object.<br />
Then use a ruler <strong>to</strong> measure.<br />
1.<br />
Answers will vary.<br />
Estimate: inches<br />
Measure: 4 inches<br />
Practice D25<br />
Practice<br />
D25<br />
2. Estimate: inches<br />
3. Estimate: inches<br />
4. Measure the length of the straw in inches.<br />
About how long is the straw?<br />
Measure: inches<br />
5 inches 7 inches<br />
6 inches 8 inches<br />
Answers will vary.<br />
Measure: 2 inches<br />
Answers will vary.<br />
45093_Practice_A29-D89.indd D25 6/30/08 12:00:04 PM<br />
3<br />
© Pearson Education, Inc. 1<br />
© Pearson Education, Inc. 1<br />
© Pearson Education, Inc. 1
Change language