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
5 × 10 = ______
84 + 20 = ______
45 + 10 = ______
52 + 20 = ______
58 − 10 = ______
77 − 10 = ______
1 × 10 = ______
57 + 20 = ______
88 − 10 = ______
3 × 10 = ______
6 × 10 = ______
20 + 20 = ______
50 + 10 = ______
66 − 10 = ______
26 − 10 = ______
61 − 10 = ______
22 − 10 = ______
87 + 10 = ______
16 + 20 = ______
8 × 10 = ______
