Singapore Math Level 2A & 2B – Review 4: Length and Mass
Fill in each blank. Look at the picture and find the correct answer.
1.
(a) The hair clip is ____ cm long.
(b) The ribbon is _____ cm long.
(c) The comb is ______ cm long.
(d) The rubber band is _______ cm long.
(e) The ribbon is shorter than the comb by ________ cm.
(f) The rubber band is shorter than the hair clip by …………….cm.
(g) The total length of the comb and the hair clip is ……..cm.
(h) Arrange the items in order. Begin with the shortest.
Solution:
(a) 6cm–1cm =5cm
(b) 10cm–1cm =9cm
(c) 12cm–1cm =11cm
(d) 3cm–1cm =2cm
(e) 11cm–9cm =2cm
(f) 5cm–2cm =3cm
(g) 5cm+11cm =16cm
(h) rubber band, hair clip, ribbon, comb
2.
The mass of the watermelon is ————- oz.
Solution:
The mass of the watermelon is 2 oz.
3. Which line is the shortest?
A ———-
B —————
C ————————
Solution:
Line A is the shortest.
4.
The mass of the toy robot is ————- g
Solution:
The mass of the toy robot is 400 g.
5.
(a) The key is ____ cm long.
(b) The paintbrush is _____cm long.
(c) The spoon is _____cm long.
(d) The fork is _______cm long.
(e) The key is shorter than the fork by _______cm.
(f) The paintbrush is longer than the spoon by _______cm.
(g) The ____ and _____ have the same length.
(h) Arrange the items in order. Begin with the longest.
Solution:
a) 6cm–1cm =5cm
(b) 11cm–1cm =10cm
(c) 8cm–1cm =7cm
(d) 8cm–1cm =7cm
(e) 7cm–5cm =2cm
(f) 10cm–7cm =3cm
(g) spoon, fork
(h) paintbrush, spoon, fork, key /
paintbrush, fork, spoon, key
6.
The mass of the cat is ———- lb.
Solution:
The mass of the cat is 17 lb.
7.
(a) The mass of the toy car is ______.
(b) The mass of the toy plane is _______.
(c) The mass of the toy ship is _________.
(d) The _________ is the heaviest.
(e) The ___________ is the lightest.
Solution:
(a) 3
(b) 4
(c) 2
(d) toy plane
(e) toy ship
8. Which line is the longest?
A —————-
B ————————–
C ————————————–
Line ———— is the longest.
Solution:
Line C is the longest.
Fill in each blank with more than or less than.
9.
The bag of rice is ———– 3 lb.
Solution:
The bag of rice is more than 3 lb.
[Note: The bag of rice sinks on the balance. This shows that the bag of rice is heavier.]
10.
The purse is ————— 2 lb.
Solution:
The purse is less than 2 lb.
[Note: The purse rises on the balance. This shows that the purse is lighter.]
Fill in each blank with the correct answer.
11. 40 yd. + 68 yd. =…… yd.
12. 435 in. – 79 in. =……… in.
13. 616 in. – 327 in. =……. in.
14. 125 ft. + 225 ft. =……..ft.
15. 609 yd. + 163 yd. = ………… yd.
Solution:
11. 108
12. 356
13. 289
14. 350
15. 772
Solve the following story problems. Show your work in the space below. Draw the appropriate models.
16.
How much farther is David Bowie’s house from the shopping center than from the supermarket?
Solution:
525 – 360 = 165
David Bowie’s house is 165 m farther from the shopping complex than from the supermarket.
17. Amanda Bynes jogs from her house to the stadium every day. Her jogging route is shown below.
How far does Amanda Bynes jog from her house to the stadium?
Solution:
375 + 425 = 800
Amanda Bynes jogs 800 yd. from her house to the stadium.
18. Kenya came back from a trip. She brought along 2 bags that weighed 8 lb. each. Find the total mass of her bags.
Solution:
2 × 8 = 16
The total mass of her bags was 16 lb.
19. Jonathan bought some balls. Each ball had a mass of 3 gram. The total mass of the balls was 15 gram. How many balls did he buy?
Solution:
15 ÷ 3 = 5
He bought 5 balls.
20. Su-Lin placed 5 pencils side by side. Each ruler had a length of 10 cm. What was the length of the 5 pencils?
Solution:
5 × 10 = 50
The length of the 5 pencils was 50 cm.
