Page 69 - TG_G1_CH6_CHRIS

Guide children to review the strategies from the chapter as shown on the
Reflection page, and then assess their level of understanding by having them
complete the Reflection check page.

CHECK

1 More and 10 More 1 Less and 10 Less A. Write 1 more or 10 more. D. Add.
1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10
66
11 12 13 14 15 16 17 18 19 20 11 12 13 14 15 16 17 18 19 20 1 1 more than 65 is . Tens Ones
21 22 23 24 25 26 27 28 29 30 21 22 23 24 25 26 27 28 29 30 5 6
31 32 33 34 35 36 37 38 39 40 31 32 33 34 35 36 37 38 39 40
83
41 42 43 44 45 46 47 48 49 50 41 42 43 44 45 46 47 48 49 50 + 7
51 52 53 54 55 56 57 58 59 60 51 52 53 54 55 56 57 58 59 60 2 10 more than 73 is .
61 62 63 64 65 66 67 68 69 70 61 62 63 64 65 66 67 68 69 70 6 3
71 72 73 74 75 76 77 78 79 80 71 72 73 74 75 76 77 78 79 80
81 82 83 84 85 86 87 88 89 90 81 82 83 84 85 86 87 88 89 90
91 92 93 94 95 96 97 98 99 100 91 92 93 94 95 96 97 98 99 100
1 more than 39 is 40. 1 less than 39 is 38. B. Write 1 less or 10 less. E. Subtract.
10 more than 39 is 49. 10 less than 39 is 29.
19
1 10 less than 29 is . Tens Ones
Adding tens and ones Adding two-digit 7 0
53
numbers with regrouping 2 1 less than 54 is . − 3 0
T O T O 4 0
3 2 T O T O T O
+ 6 2 1 3 9
3 8 3 8 + C. Add. F. Add or subtract.
3 2 2 12 3 2
Tens Ones 1 50 + 40 = 90 90
2 5
Subtracting tens Thinking addition to + 4
subtract tens 2 40 + 50 = 90 40 50
T O T O 2 9
6 0 80 70 + 10 = 80 3 90 – 40 = 50
− 2 0 10 + 70 = 80
4 0 4 0 4 90 – 50 = 40
70 10 80 – 10 = 70
310 311

460