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
99 − 10 = ______
85 + 10 = ______
6 × 10 = ______
46 + 20 = ______
56 + 20 = ______
2 × 10 = ______
3 × 10 = ______
26 + 20 = ______
47 + 10 = ______
70 + 20 = ______
33 − 10 = ______
56 − 10 = ______
25 − 10 = ______
38 + 20 = ______
7 × 10 = ______
61 − 10 = ______
32 + 20 = ______
50 − 10 = ______
79 − 10 = ______
39 + 20 = ______
