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
68 + 20 = ______
3 × 10 = ______
79 + 20 = ______
73 + 20 = ______
66 + 20 = ______
9 × 10 = ______
30 + 10 = ______
59 + 10 = ______
21 + 20 = ______
73 − 10 = ______
50 + 10 = ______
8 × 10 = ______
81 − 10 = ______
2 × 10 = ______
6 × 10 = ______
77 + 10 = ______
23 − 10 = ______
14 + 20 = ______
95 − 10 = ______
56 + 10 = ______
