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
28 − 10 = ______
9 × 10 = ______
39 + 20 = ______
45 + 10 = ______
1 × 10 = ______
40 − 10 = ______
3 × 10 = ______
69 + 10 = ______
8 × 10 = ______
68 + 10 = ______
7 × 10 = ______
68 + 20 = ______
61 + 10 = ______
39 − 10 = ______
80 + 20 = ______
77 − 10 = ______
46 − 10 = ______
31 + 10 = ______
37 − 10 = ______
87 + 10 = ______
