NAME ____________________________________ DATE __________________
ACTIVITY
1 Solve these problems. Fill in the totals on the 400 chart below.
302 + 10 + 10 = __________
353 + 10 + 10 = __________
325 + 10 + 10 + 10 = __________
338 − 10 − 10 − 10 + 10 = __________
378 − 10 − 10 + 10 − 10 = __________
314 + 10 − 10 − 10 = __________
396 − 10 − 10 − 10 = __________
361 − 10 + 10 + 10 = __________
2 Fill in the other missing numbers on the 400 chart.
d