1. Multiplying
2-Digit
Numbers I

2. Multiplying with a 2-Digit Factor30 3 × 1 4 1 2 10 + 3 4 2 4 30

3. Multiplying with a 2-Digit Factor30 2 3 2 × 1 4 8 10 10 1 2 2 4 4 + 3 30 2 4 4 8

4. Multiplying with a 2-Digit Factor1
4 × 3 = 12
1 × 2 = 2
1 × 3 = 3
4 × 2 = 8
Tip: Always cross out a regrouped number after you add it. 2 3
8 + 1 = 9 × 1 4 9 2 1 + 2 3
9 + 3 = 12
2 + 0 = 2
1 + 2 = 3 3 2 2
Step 4: Add 92 and 230.
Step 1: Begin multiplying with the ones place.
Step 2: can no longer be multiplied. Time to put it “to rest”. You can use a tombstone, a zero, or leave the space blank
Step 3: Now we can begin to multiply with the tens place

5. Multiplying with a 2-Digit Factor3
Tip: Always cross out a regrouped number after you add it. 8 4
2 × 4 = 8
8 × 4 = 32
2 × 8 = 16
8 × 8 = 64 × 2 8
= 67 1 6 7 2 1
Don't forget
the comma! + 1 6 8
= 13
7 + 8 = 15
1 + 1 = 2
2 + 0 = 2 2 , 3 5 2
Step 4: Add 672 and 1,680.
Step 1: Begin multiplying with the ones place.
Step 2: can no longer be multiplied. Time to put it “to rest”. You can use a tombstone, a zero, or leave the space blank
Step 3: Now we can begin to multiply with the tens place

6. Multiplying with a 2-Digit Factor1 3
Tip: Always cross out a regrouped number after you add it. 5 4
4 × 4 = 16
4 × 5 = 20
9 × 5 = 45
9 × 4 = 36 × 4 9
= 48
= 21 1 4 8 6
6 + 0 = 6
Don't forget
the comma! + 2 1 6
8 + 6 = 14 2 , 6 4 6
= 6
Step 1: Begin multiplying with the ones place.
Step 2: can no longer be multiplied. Time to put it “to rest”. You can use a tombstone, a zero, or leave the space blank
Step 3: Now we can begin to multiply with the tens place
Step 4: Add 486 and 2,160.

7. Multiplying with a 2-Digit Factor
3 × 9 = 27
3 × 5 = 15
Tip: Always cross out a regrouped number after you add it. 5 9
= 17
1 × 5 = 5
1 × 9 = 9 × 3 1 5 9
9 + 0 = 0 1
Don't forget
the comma! + 1 7 7
5 + 7 = 12 1 , 8 2 9
1 + 7 = 8
Step 1: Begin multiplying with the ones place.
Step 2: can no longer be multiplied. Time to put it “to rest”. You can use a tombstone, a zero, or leave the space blank
Step 3: Now we can begin to multiply with the tens place
Step 4: Add 59 and 1,770.

8. Your Turn!
Use graph paper to line up your problem. 1 1 6 2 × 8 9 1 5 5 8 1 + 4 9 6 5 , 5 1 8

9. Your Turn!
Use graph paper to line up your problem. 1 7 2 × 5 3 2 1 6 + 3 6 3 , 8 1 6

10. Your Turn!
Use graph paper to line up your problem. 1 5 3 6 × 2 9 3 2 4 + 7 2 1 , 4 4

11. Your Turn!
Use graph paper to line up your problem. 4 5 9 6 × 7 9 8 6 4 1 + 6 7 2 7 , 5 8 4