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Abacus · Ages 7+ · Set A
Rounding at the stall
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A
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Goal: 15 min
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Remember: Look at the ones row. Four or fewer fall back. Five or more slide up to the next ten.

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The apple stallMia and Ben help at the apple stall on fair day. Ben counts 24 apples in the crate. The sign painter only has signs for whole tens, like twenty and thirty. Picture a hill between two tens. A ball on the hill rolls to the nearer ten. So 24 rounds to 20, and Mia's 28 pears round to 30. On the frame, look at the ones row. Four ones or fewer fall back. Five ones or more slide up to the next ten.
1
What does 43 round to, the nearest ten?
405043
2
What does this frame round to, the nearest ten?
506057
3
Round 38 to the nearest ten:
4
Does 61 round up to 70?
YesNo
5
Seventy-five rounds up to eighty.
TrueFalse
6
Which frame rounds to 50?
A
B
C

Match, order and fix

7
Join each number to its nearest ten.
  1. 113
  2. 226
  3. 341
  4. 477
  • A80
  • B10
  • C40
  • D30
8
Which numbers round down to 30? Circle every one.
31353337
9
Rounding means finding the nearest .
hundredoneten
10
Put the steps for rounding on the frame in order.
  • Fall back with four or fewer, slide up with five or more
  • Look at the ones row
  • Find the tens and the ones on the frame
11
Ben says 85 rounds down to 80. Is he right?
YesNo
12
Round 35 to the nearest ten:
13
Draw the beads for 62 on the frame.
14
Find a price at home. Write it, then round it to the nearest ten.
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Answer key · Set A
Rounding at the stall
140 Three ones are few, so they fall back to the ten below.
260 Seven ones are many, so they slide away and one more ten slides across.
340 Eight ones slide up, so 3 tens become 4 tens.
4No Only one one: it falls back, so 61 rounds to 60.
5True Five ones sit right on top of the hill, and five or more goes up.
6C 46 has six ones, so it slides up to 50. 41 falls back to 40, and 57 slides up to 60.
71-B, 2-D, 3-C, 4-A Look at the ones: four or fewer fall back, five or more slide up.
831, 33 31 and 33 have few ones. 35 and 37 have five or more ones, so they go up to 40.
9ten We round to the nearest ten, the village on the hill.
103, 2, 1 The tens row picks the village, and the ones row shows how far up.
11No 85 has five ones, and five or more slide up to the next ten, 90.
1240 Five ones go up, so 35 rounds to 40.
14Your own words: a grown-up reads it.
Mark each answer, count the right ones and write the score on the sheet.