Adjusting
What is 49 + 22 using the adjusting strategy?
What is 71
what is 34 + 23
what is 57
add 5 tens and 3 ones to 2 tens and 5 ones
what is 7 tens and 8 ones = 78
Start at 45, count up 20
what is 65
What is 63 - 29?
What is 34
What is 62 - 24
What is 38
subtract 3 tens and 2 ones from 8 tens and 6 ones
5 tens and 4 ones = 54
Start at 72. Count back 30. Where do you land?
What is 42
What is 78 + 24?
What is 102
What is 55 + 37
what is 92
add 4 tens and 10 ones to 3 tens
7 tens and 10 ones = 80
Start at 58. Jump ahead 13. What number is that?
what is 71
What is 87 - 39?
What is 48
What is 84 - 56
What is 28?
subtract 2 tens and 8 ones from 5 tens and 4 ones
what is 2 tens and 6 ones = 26
Start at 97. Jump back 28. What number is that?
what is 69
What is 91 + 38
What is 129?
What is 73 + 48
What is 121
subtract 4 tens and 8 ones from 8 tens and 3 ones.
what is 3 blocks and 5 ones = 35
Start at 65. You jump forward 10, then 8 more. Where do you land?
what is 83