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
29 + 10 = ______
77 + 20 = ______
60 − 10 = ______
99 − 10 = ______
7 × 10 = ______
28 − 10 = ______
1 × 10 = ______
64 + 20 = ______
68 + 20 = ______
64 + 10 = ______
34 + 10 = ______
76 − 10 = ______
73 + 20 = ______
95 − 10 = ______
9 × 10 = ______
74 + 20 = ______
6 × 10 = ______
12 + 20 = ______
39 + 20 = ______
2 × 10 = ______
