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
4 × 10 = ______
89 + 20 = ______
5 × 10 = ______
35 − 10 = ______
40 + 10 = ______
26 + 10 = ______
15 + 10 = ______
6 × 10 = ______
51 − 10 = ______
9 × 10 = ______
69 − 10 = ______
99 − 10 = ______
27 + 20 = ______
1 × 10 = ______
40 − 10 = ______
41 + 20 = ______
90 − 10 = ______
49 + 20 = ______
98 − 10 = ______
84 + 10 = ______
