Practice with the help of Spectrum Math Grade 5 Answer Key Chapter 1 Lesson 1.1 Multiplying 2 and 3 Digits by 2 Digits regularly and improve your accuracy in solving questions.
Spectrum Math Grade 5 Chapter 1 Lesson 1.1 Multiplying 2 and 3 Digits by 2 Digits Answers Key
Multiply right to left.
If 24 × 3 = 72, then 24 × 30 = 720.
Multiply right to left.
Multiply.
Question 1.
a.
Answer:
Multiply right to left.
43 x 2 = 86.
If 43 x 4 = 172 then 43 x 40 = 1720.
b.
Answer:
Multiply right to left.
72 x 2 = 150.
If 75 x 1 = 75 then 75 x 10 = 750.
c.
Answer:
Multiply right to left.
52 x 8 = 416.
52 x 2 = 104 then 52 x 20 = 1040.
d.
Answer:
Multiply right to left.
36 x 1 = 36.
36 x 9 = 324 then 36 x 90 = 3240.
e.
Answer:
Multiplying right to left.
16 x 7 = 112.
If 16 x 7 = 112 then 16 x 70 = 1120.
f.
Answer:
Multiplying right to left.
21 x 3 = 63
If 21 x 1 = 21 then 21 x 10 = 210.
Question 2.
a.
Answer:
Multiply right to left.
24 x 7 = 168.
If 24 x 8 = 192 then 24 x 80 = 1920.
b.
Answer:
Multiply right to left.
62 x 4 = 248.
If 62 x 5 = 310 then 62 x 50 = 3100.
c.
Answer:
Multiply right to left.
96 x 2 = 192.
If 96 x 3 = 288 then 96 x 30 = 2880.
d.
Answer:
Multiplying right to left.
18 x 7 =126.
If 18 x 4 = 72 then 18 x 40 = 720.
e.
Answer:
Multiply right to left.
33 x 9 = 297.
If 33 x 7 = 231 then 33 x 70 = 2310.
f.
Answer:
Multiply right to left.
45 x 3 = 135.
If 45 x 6 = 270 then 45 x 60 = 2700.
Question 3.
a.
Answer:
Multiplying right to left.
26 x 3 = 78
If 26 x 5 = 130 then 26 x 50 = 1300.
b.
Answer:
Multiply right to left.
39 x 4 = 156.
If 39 x 7 = 273 then 39 x 70 = 2730.
c.
Answer:
Multiplication of right to left.
44 x 1 = 44.
If 44 x 8 = 352 then 44 x 80 = 3520.
d.
Answer:
Multiply right to left.
73 x 4 = 1892.
If 473 x 6 = 2838 then 473 x 60 = 28380.
e.
Answer:
Multiply right to left.
856 x 2 = 1712.
If 856 x 2 = 1712 then 856 x 20 = 1712.
f.
Answer:
Multiply right to left.
375 x 9 = 3375.
If 375 x 4 = 1500 then 375 x 40 = 15000.
Question 4.
a.
Answer:
Multiply right to left.
838 x 8 = 6704.
838 x 5 = 4190 then 838 x 50 = 4190.
b.
Answer:
Multiply right to left.
266 x 3 = 798.
If 266 x 9 = 2394 then 266 x 90 = 23940.
c.
Answer:
Multiply right to left.
372 x 6 = 2232.
If 372 x 4 = 1488 then 372 x 40 = 14880.
d.
Answer:
Multiply right to left.
659 x 8 = 5272.
If 659 x 7 = 4613 then 659 x 70 = 46130.
e.
Answer:
Multiply right to left.
428 x 7 = 2996.
If 428 x 3 = 1284 then 428 x 30 = 12840.
f.
Answer:
Multiply right to left.
235 x 6 = 1410.
If 235 x 8 = 1880 then 235 x 80 = 18800.
Question 5.
a.
Answer:
Multiply right to left.
907 x 3 = 2721.
If 907 x 3 = 2721 then 907 x 30 = 27210.
b.
Answer:
Multiply right to left.
415 x 7 = 2905.
If 415 x 2 = 830 Then 415 x 20 = 8300.
c.
Answer:
Multiply right to left.
364 x 2 = 728.
If 364 x 8 = 2912 then 364 x 80 = 29120.
d.
Answer:
Multiply right to left.
547 x 4 = 2188.
If 547 x 5 = 2730 then 547 x 50 = 27300.
e.
Answer:
Multiply right to left.
739 x 2 = 1478.
If 739 x 6 = 4434 then 739 x 60 = 44340.
f.
Answer:
Multiply right to left.
697 x 6 = 4182.
If 697 x 7 = 4879 then 697 x 70 = 48790.
