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
43 + 10 = ______
38 − 10 = ______
84 + 20 = ______
75 − 10 = ______
23 − 10 = ______
37 − 10 = ______
1 × 10 = ______
65 + 10 = ______
42 − 10 = ______
25 + 10 = ______
3 × 10 = ______
81 − 10 = ______
60 + 10 = ______
54 + 10 = ______
66 + 20 = ______
65 + 20 = ______
59 − 10 = ______
78 + 20 = ______
34 − 10 = ______
22 + 10 = ______
