Matemáticas mentales Worksheet
Recommended for 1er grado — 5to grado
Matemáticas mentales Worksheet
Name: ____________________Date: ____________
Instructions: Usar estrategias mentales como sumar diez, duplicar y compensar para calcular rápidamente.
20 problems
60 + 10 = ______
29 + 20 = ______
28 + 10 = ______
21 − 10 = ______
25 + 10 = ______
9 × 10 = ______
30 + 20 = ______
53 − 10 = ______
35 − 10 = ______
25 − 10 = ______
69 + 10 = ______
70 + 10 = ______
7 × 10 = ______
59 − 10 = ______
36 − 10 = ______
58 + 20 = ______
40 − 10 = ______
34 + 20 = ______
38 − 10 = ______
2 × 10 = ______
