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
3 × 10 = ______
8 × 10 = ______
87 + 10 = ______
60 + 20 = ______
62 − 10 = ______
78 + 10 = ______
2 × 10 = ______
57 + 20 = ______
11 + 10 = ______
13 + 20 = ______
34 − 10 = ______
79 − 10 = ______
30 + 10 = ______
44 + 10 = ______
64 + 20 = ______
9 × 10 = ______
66 − 10 = ______
25 + 10 = ______
49 + 20 = ______
26 − 10 = ______
