Vertical Form
What is 380 + 300?
680
What is 924 − 400?
524
What number plus 500 equals 873?
373
What is 23 + 14
23 → +10 → 33 → +4 → 37
How many tens and ones are in 42
4 tens
2 ones
What is 46 + 12
58
what is 34 into tens and ones.
3 tens, 4 ones
What is 19 + 6 if you add 1 first?
20 + 5 = 25
What is 36 + 21
36 → +20 → 56 → +1 → 57
What number has 6 tens and 3 ones?
63
What is 58 − 26
32
what is Decompose 56. Then add:
(50 + 6) + (20 + 3)
79
what is 38 + 22
What number did you make friendly?
40 + 20= 60
What is 48 + 25
48 → +20 → 68 → +5 → 73
Which number is greater: 58 or 85? Explain using place value.
85 is greater
What is 34 + 29
63
what is 63 − 28 using decomposing.
35
68 + 27
Tell what you changed and why.
70+ 25= 95
What is 62 − 19
62 → −10 → 52 → −9 → 43
What happens to the value when you add 1 ten to 47?
47 becomes 57
What is 72 − 38
34
What is 74 + 18
92
What is 51 + 19
50 + 20= 70
What is 75 + 18
75 → +10 → 85 → +8 → 93
Compare using >, <, or =
69 ⬜ 96
69 < 96