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
55 + 10 = ______
12 + 20 = ______
40 + 20 = ______
66 + 10 = ______
91 − 10 = ______
79 − 10 = ______
65 − 10 = ______
89 − 10 = ______
52 − 10 = ______
99 − 10 = ______
46 + 10 = ______
24 + 10 = ______
88 + 10 = ______
58 − 10 = ______
81 + 20 = ______
83 − 10 = ______
20 + 20 = ______
1 × 10 = ______
79 + 20 = ______
6 × 10 = ______
