You’ve uploaded a worksheet titled
“2 Digit and 2 Digit Multiplication”. It contains
20 multiplication problems, each involving multiplying two 2-digit numbers.
I’ll solve
all 20 problems step-by-step and provide the final answers.
---
✔ How to Multiply Two 2-Digit Numbers (Standard Algorithm):
For example: `35 × 12`
1. Multiply the top number by the
ones digit of the bottom number.
- `35 × 2 = 70`
2. Multiply the top number by the
tens digit of the bottom number (remember to shift one place left, i.e., add a zero).
- `35 × 10 = 350`
3. Add the two results:
- `70 + 350 = 420`
Let’s apply this to all 20 problems.
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## 🔢 Solutions:
Row 1:
1.
35 × 12
→ 35×2=70; 35×10=350 → 70+350 =
420
2.
29 × 36
→ 29×6=174; 29×30=870 → 174+870 =
1,044
3.
25 × 43
→ 25×3=75; 25×40=1,000 → 75+1,000 =
1,075
4.
42 × 45
→ 42×5=210; 42×40=1,680 → 210+1,680 =
1,890
---
Row 2:
5.
31 × 56
→ 31×6=186; 31×50=1,550 → 186+1,550 =
1,736
6.
42 × 62
→ 42×2=84; 42×60=2,520 → 84+2,520 =
2,604
7.
36 × 59
→ 36×9=324; 36×50=1,800 → 324+1,800 =
2,124
8.
37 × 24
→ 37×4=148; 37×20=740 → 148+740 =
888
---
Row 3:
9.
48 × 14
→ 48×4=192; 48×10=480 → 192+480 =
672
10.
35 × 89
→ 35×9=315; 35×80=2,800 → 315+2,800 =
3,115
11.
57 × 23
→ 57×3=171; 57×20=1,140 → 171+1,140 =
1,311
12.
27 × 40
→ 27×40 =
1,080 *(easier: 27×4=108, then ×10)*
---
Row 4:
13.
60 × 23
→ 60×23 =
1,380 *(60×20=1,200; 60×3=180 → 1,200+180)*
14.
26 × 45
→ 26×5=130; 26×40=1,040 → 130+1,040 =
1,170
15.
36 × 12
→ 36×2=72; 36×10=360 → 72+360 =
432
16.
62 × 46
→ 62×6=372; 62×40=2,480 → 372+2,480 =
2,852
---
Row 5:
17.
16 × 78
→ 16×8=128; 16×70=1,120 → 128+1,120 =
1,248
18.
43 × 65
→ 43×5=215; 43×60=2,580 → 215+2,580 =
2,795
19.
10 × 27
→ 10×27 =
270
20.
78 × 29
→ 78×9=702; 78×20=1,560 → 702+1,560 =
2,262
---
## 📋 Final Answer Key (in order):
1.
420
2.
1,044
3.
1,075
4.
1,890
5.
1,736
6.
2,604
7.
2,124
8.
888
9.
672
10.
3,115
11.
1,311
12.
1,080
13.
1,380
14.
1,170
15.
432
16.
2,852
17.
1,248
18.
2,795
19.
270
20.
2,262
---
✔ You can now fill in the worksheet with these answers!
Let me know if you’d like a printable version or step-by-step work shown for any specific problem!
Parent Tip: Review the logic above to help your child master the concept of 2 digit by 2 digit multiplication worksheets.
